A robot which eliminates itself either accidentally or deliberately (via several different ways) is considered to have achieved a self-inflicted immobilisation. This differs from hostile immobilisations (which are inflicted by opposing robots), malfunctions (in robot design or engineering) and hazard immobilisations (which are inflicted by House Robots or arena hazards, such as the Floor Flipper and spikes).
Self-inflicted immobilisations are often referred to on Robot Wars as a robot committing suicide.
The key term in deciding if an immobilisation has been self-inflicted or not is to determine whether there has been an avoidable error. An avoidable error cannot be in design or engineering, nor a broad error such as a Gauntlet route or choosing to take on a certain robot. They must be concise, specific events which directly cause an immobilisation. Examples are listed below.
Often, robots became immobilised due to contact with parts of the arena (not including hazards), usually by hitting a wall or getting stuck in the floor.
- In the Stock Car Trial, Demolisher crashed into a wall at top speed, flipping itself over. With no other robot involved, and Demolisher's own avoidable action responsible for its immobilisation, this is considered a self-inflicted immobilisation.
- Similarly, when both Kat 3 and The Steel Avenger got their axes stuck in the arena floor, this was an avoidable error and had it solely cost them their battles, it would have been designated here.
- Contrarily, when Vector of Armageddon attempted the Gauntlet in Heat D of Series 1, it became stuck attempting the second ramp. The reason for the immobilisation was that Vector of Armageddon's ground clearance was too low. Therefore, the robot's design meant that it would never have been able to traverse that second ramp. Getting wedged was not an avoidable error, and this is therefore not a case of self-inflicted immobilisation. Although it can be argued that taking the ramp at all was an error, Vector of Armageddon succeeded in negotiating the first ramp, and nearly all robots had succeeded in taking the second one. Therefore, it is not reasonable to believe that taking the ramp would have ended in immobilisation.
- When Psychosprout drove forward in the Labyrinth trial in Series 1, Heat E, it collided with REALI-T and rolled back to the start. This immobilisation was primarily caused by the collision between both robots,
When a robot breaks down after catching fire - usually through driving itself over or near a flame hazard - it is deemed to have become immobilised by fire.
- Terror-Bull chose to light its tail on fire in its Series 4 battle with Raizer Blade. This turned out to be an erroneous decision as Terror-Bull's motors burnt out.
- Most immobilisations by fire, although in the same method, are not self-inflicted. Technophobic burst into flames in Series 3, but only after it was pushed onto the Flame Pit by Pitbull during their second-round battle. Being pushed onto the Flame Pit was not Technophobic's choice, and was therefore not an avoidable error.
Although most thought to be classed as a malfunction, recoil occurs when a robot's weapon malfunctions or contains too much power/energy within an attack, causing the robot to immobilise itself through this.
- In its Extreme 1 Mayhem battle against Napalm 2, one half of Gemini flipped itself onto its back, where its wheelie bar pinned it off the ground. If a robot puts itself into a position where it becomes immobilised, it is considered self-inflicted.
- PP3D's attack on Cherub in their Series 9 Head-to-Head was not only powerful enough to send Cherub spinning into the wall and immobilise it, but also shear one of its own drive motors off its mounts, leaving it unable to drive in a straight line when the battle was restarted. If a robot damages itself during an attack and becomes immobilised as a result, the immobilisation is considered self-inflicted.
- Inverterbrat's flipper became wedged beneath the robot and beached it off the ground when trying to flip The Creature. Although this would seem like a self-inflicted immobilisation, there was no avoidable error, as the flipper in fact malfunctioned to pin it in place. Therefore, this was a malfunction.
- In trying to flip S.M.I.D.S.Y. out of the arena in the heat final, Chaos 2 flipped itself over, and was unable to right itself. Whilst this could be seen as a self-immobilisation, it was later revealed the reason Chaos 2 couldn't self-right was because S.M.I.D.S.Y. had damaged its flipper panel. It could be argued that, as S.M.I.D.S.Y. played a direct role in preventing Chaos 2 from recovering, it could not be seen as a self-inflicted immobilisation.
Whenever a robot falls into the Pit of Oblivion through any means, it is classified as having been pitted.
- Most infamously, when Killerhurtz drove across the arena and into the pit, there was no possible contact with Cerberus that could have caused the pitting, with Cerberus still on the other side of the arena as it happened. John Reid's actions were, therefore, an avoidable error and Killerhurtz's pitting is considered a self-immobilisation.
- In a different take on things, when Cassius 2 attempted to pit Pussycat in Heat M of Series 3, Cassius 2 charged too quickly in its attempt to do so, overshooting the edge of the pit and falling in itself. Despite Pussycat being involved in the tussle, Cassius made an avoidable error by putting too much acceleration into its push. Therefore, where a robot pits itself whilst attempting to pit another, it is considered a self-inflicted immobilisation.
- Any instance where a robot is pushed, flipped or dropped into the pit by another competitor or a House Robot. These are actions beyond the robot's control, and are considered hazard immobilisations.
- When Eric drove into the pit whilst trying to push King Buxton in, this had come as a result of King Buxton pushing Eric towards the pit and getting both robots stranded with half of their wheels suspended over the pit. Whilst Eric did technically pit itself seconds later, it had only done so due to actions caused by its opponent which prevented it from being able to drive away from the pit in the first place. If Eric had been able to pull itself away from the pit and then fall in, it would have been classed as a self-inflicted error.
- When Stinger rebounded into the pit in Series 3, Heat A, it may have been considered an avoidable error through Stinger having driven uncontrollably near the pit. However, when Stinger fell in, it did so by driving into a charging Mace 2 and being deflected away. Therefore, it is impossible to tell whether Stinger's trajectory change was due to Mace 2's attack (making it a hostile immobilisation), or due to Stinger's prominent control issues. With such doubt, Stinger's pitting in this battle cannot be considered a self-inflicted immobilisation.
- When Wild Thing 2 dashed over the descending pit in its Series 6 Semi-Final Losers' Melee and failed to get away in time, this is generally not considered an avoidable error. Often there was a delay in the pit descending after the release was pressed, so it cannot be accurately judged whether a robot made a mistake by driving across the descending pit, or were taken unawares by its descent. The exception is Major Tom, which actually activated the pit during its Series 5 battle against Kat 3 and knew it would be descending.
To be stranded, a robot has to have entered a position where it cannot move. The most common cases of getting stranded are through driving onto grilles (Series 1), into the Pit of Oblivion (see Pitted), or off platforms in the Sumo trials or side competitions (Series 2, Series 4).
- During Dantomkia's battle with S3, Dantomkia became stuck underneath an angle grinder after driving into it. It is impossible to tell whether the impact, the angle grinder, S3's disc, or Refbot's attempt to push it free were responsible for the immobilisation. However, irrespective of the actual cause, Dantomkia's immobilisation was directly influenced by it driving into the angle grinder in the first place. Therefore, if a robot takes terminal damage whilst caught in a position it gets itself stuck in, it is considered a self-inflicted immobilisation.
- Any instance where a robot is pushed into the aforementioned hazards and gets stuck, or pushed off the platform in Sumo competitions. The former circumstances are considered to be hazard immobilisations, such as Tornado impaling one half of Gemini onto a wall spike in Series 4.
Especially since Series 8, it is possible for a robot to become immobilised by driving onto and being flipped by the Floor Flipper. This is especially possible if the affected robot is unable to run inverted or has no self-righting mechanism.
- Chompalot's defeat to Gabriel in Series 8 was solely attributed to Chompalot driving itself onto the Floor Flipper, being thrown across the arena, and left unable to self-right upon landing on its side near the arena wall.
- Similarly, Foxic backed onto the Floor Flipper during its Series 9 Group Battle, and was effectively immobilised after its lifting arm failed to work at all.
- Any instance where a robot is pushed onto the Floor Flipper by another and is flipped. A notable example is TR2 pushing Dantomkia onto it during their Series 8 Heat Final, an action which was beyond Dantomkia's control. Such actions are considered to be hazard immobilisations.
- In the original series, the Floor Flipper was only generally used to throw immobilised competitors across the arena, after they had been placed there by a House Robot or their opponent(s). As competitors had already been eliminated before being flipped, these instances do not count as self-inflicted immobilisations.
|Grunt||Stranded||Heat A, Trial (Sumo)||Drove straight off the platform, clocking only 4.15 seconds.|
|Uglybot||Arena Hamper||Heat B, Gauntlet||Turned prematurely in the turntable, and upon exiting the turntable, promptly pinned itself in place.|
|Cruella||Stranded||Heat C, Semi-Final||Cruella drove onto the grille in its battle with Robot The Bruce.|
|Demolisher||Arena Hamper||Heat D, Trial (Stock Car)||Demolisher crashed into a wall at full speed and flipped over. However, the 2 laps it had completed were enough to ensure it survived the trial.|
|Bugs||Stranded||Heat D, Semi-Final||Was having severe oversteering problems, and after being pushed near the grille, eventually spun its way onto the surface.|
|Wharthog||Arena Hamper||Heat E, Gauntlet||Wharthog crashed into a railing, crumpling the corner of its wedge and getting it stuck.|
|Schumey||Stranded||Heat E, Trial||Swerved off the platform whilst trying to dodge the house robots in King of the Castle.|
|Plunderbird 2||Pitted||Heat K, Gauntlet||Chose to dive into the pit rather than confront Matilda for further distance gains. Other teams mockingly clucked at them in the pits afterwards.|
|Cassius||Pitted||Grudge Matches, Judgement Day||Rex Garrod accidentally drove into the pit while trying to shove Mortis in.|
|Napalm||Pitted||Grudge Matches, Judgement Day 2||Drove onto the lip of the pit while escaping from Mortis. Its weight eventually shifted, causing it to fall in.|
|Milly-Ann Bug||Pitted||Heat D, Round 1||Milly-Ann Bug overshot a charge to push Bumblebot into the pit, and fell in itself.|
|Cassius 2||Pitted||Heat M, Round 2||Cassius 2 accidentally reversed into the pit while trying to knock Pussycat into it. Considered one of the most Major shocks of the Third Wars.|
|Killerhurtz||Pitted||Heat N, Round 1||Drove into the pit. The team claimed it was accidental, stating that they mistook the pit for a black floor panel. One of the most infamous of all self-inflicted immobilisations.|
|Crusader||Pitted||Pinball Warrior Tournament||Ended its pinball run by accidentally reversing into one of the shallow pits, which it was unable to escape from.|
|Mortis||Stranded||Pinball Warrior Tournament||One of its tracks became stuck in the pit at the end of the run.|
|Chaos 2||Pitted||The First World Championship, Round 2||George Francis deliberately drove Chaos 2 into the pit to avoid taking further damage from Razer and Dead Metal.|
|Destruct-A-Bubble||Stranded||Sumo Basho||Despite good early resistance, it drove itself off the ring.|
|Terror-Bull||Fire||Heat P, Round 2||Drove over the flame pit to set its tail on fire, but this caused its motors to burn out.|
|X-Terminator 2||Pitted||Tag Team Terror, Playoff||X-Terminator drove away to build up another attack, and just before cease was called, straight into the pit: the team had failed to noticed that it had opened beforehand.|
Extreme Series 1Edit
|The Executioner||Pitted||Wild Card Warriors||Pressed the pit release almost immediately, only to drive in seconds later. The quickest battle of either series of Robot Wars Extreme|
|The Spider||Fire||Mayhem||After starting well by pushing Napalm around, The Spider drove over the flame pit where its electronics instantly burned out.|
|Gemini||Recoil||Mayhem||One half of Gemini fired its flipper and threw itself onto its back, perched on top of its wheelie bar. The other half became stuck in the same position while attempting to re-right its twin.|
|Chaos 2||Pitted||The Second World Championship, Round 1||While trying to flip Mastiff into the pit, Chaos 2 missed, threw itself forward and fell in itself.|
|Shockwave||Pitted||Forces Special, Round 1||After Sub-Version pressed the pit release, Shockwave swerved, and drove straight into the opening pit.|
|Shredder||Pitted||Heat C, Round 1||Accidentally backed into the pit despite an aggressive start against the seeded Mousetrap 2.|
|Major Tom||Pitted||Heat J, Round 2||After a strong start against Kat 3, reversed squarely onto the pit which it had just activated. Designated funniest battle in Robot Wars in Robot Wars: The Ultimate Guide.|
|Crushtacean||Pitted||Heat C, Round 2||Backed into the pit despite appearing to lead this battle against former double UK champion Chaos 2.|
|Infinity||Pitted||Heat E, Round 1||Severely damaged by 259, spun into the descending pit. Infernal Contraption later spun itself onto the pit edge following similar attacks from 259, where it was counted out by Refbot.|
|Thermidor 2||Pitted||Heat F, Round 1||Lost drive to one wheel, counted out, and deliberately drove into the pit after taking punishment from the House Robots.|
|Spam||Pitted||Heat H, Round 2||A mistimed charge at Spawn Again left Spam careening straight into the pit. Second time in the heat that Spam fell into the pit.|
|Riptilion||Pitted||Heat L, Round 1||Drove into the pit after spending the entire match trying to dodge Mr. Psycho.|
|Disc-O-Inferno||Pitted||Heat L, Final||Lost drive to disc and had slim chances of winning. Drove down the pit after taking punishment from the House Robots, seemingly an intentional drive.|
|Dantomkia||Stranded||Semi-Final 1, Round 1||Pinned underneath an angle grinder long enough for S3 to cause terminal damage and immobilise it.|
|Dominator 2||Pitted||Semi-Final 2, Round 2||Veered into the pit after Tornado was almost thrown in by Matilda's flywheel.|
Extreme Series 2Edit
|Direct Action||Pitted||New Blood Championship Heat C, Round 1||Lost drive to one wheel, and drove into the pit.|
|Bash Gordon||Pitted||New Blood Championship Heat D, Round 1||Stranded itself over the pit after hitting the pit-release button.|
|Eddy Evolution||Pitted||Featherweight Championship, Round 1||After floundering near the edge of the pit, Eddy Evolution eventually drove itself in.|
|PulverizeR||Pitted||European Championship, Round 1||Drove itself into the pit due to a damaged speed controller.|
|The Stag||Pitted||Heat C, Round 1||Reversed into the pit while evading IG-88.|
|Pinser||Fire||Heat J, Round 1||Burnt itself out on a fire vent.|
|Staglet||Pitted||Robot Wars: The Seventh Wars/Featherweight Championship||Drove down the pit just as The Stag had.|
|DisConstructor||Pitted||Heat O, Round 1||Hit the pit release button and drove into the pit.|
|Rip||Pitted||Robot Wars: The Seventh Wars/Featherweight Championship||After a dominant showing, drove down the pit to avoid the House Robots, after starting to lose drive to one wheel.|
|Atomic||Recoil||Semi-Final 2, Round 2||Atomic tried to flip Typhoon 2 over, but clipped an angle grinder instead and flipped itself onto its back. Atomic's flipper jammed open, leaving it unable to self-right as Typhoon 2 battered it.|
|Bigger Brother & Firestorm 5||Pitted||All-Stars, Round 1||Both robots drove into the pit after spending the majority of the match attacking the house robots alongside Panic Attack and Kat 3.|
|Behemoth||Pitted||Heat 1, Heat Final||Backed itself into the pit after suffering intermittent drive problems in its second encounter with Carbide.|
|M.R. Speed Squared||Pitted||Heat 2, Head-to-Heads||Drove into the pit while evading Thor.|
|Supernova||Pitted||Heat 3, Group Battle||After being angled onto its side by TR2, the gyroscopic forces of Supernova's disc (which had lost both its teeth earlier on in the battle) pulled it towards the pit.|
|Infernal Contraption||Pitted||Heat 5, Group Battle||Spun itself into the pit after being pushed by Beast.|
|Chompalot||Floor Flipper||Heat 5, Head to Heads||Was thrown across the arena by the Floor Flipper after driving onto it, landing on its side near the wall and unable to self-right.|
|Ironside3||Pitted||Heat 5, Head to Heads||Drove itself into the pit while pushing Pulsar in. Ironside3 still lost the battle regardless, as the judges deemed that it had been immobilised for more then ten seconds after getting flipped by Pulsar earlier on in the battle.|
|Rapid||Recoil||Heat 1, Head-to-Heads||After getting flipped over by Aftershock, Rapid tried to self-right, but it somersaulted over Aftershock and hit the arena floor with its flipper. This jammed the flipper open as Rapid landed on its back, leaving it unable to right itself.|
|PP3D||Recoil||Heat 2, Head-to-Heads||PP3D's impact on Cherub sent the latter hurtling into the wall and immobilised it; however in doing so, one of PP3D's drive motors sheared off its mount, leaving it spinning in circles and technically immobile when the battle was restarted.|
|Foxic||Floor Flipper||Heat 3, Group Battle||After performing strongly in its Group Battle, Foxic reversed over the Floor Flipper and was thrown onto its back. As its lifting arm was missing a retaining bolt, it was inoperable, leaving Foxic unable to self-right after being flipped.|
|Wyrm||Arena Hamper||Heat 4, Group Battle||Wyrm drove straight into the wall, causing both of its drive chains to break loose on contact. This initially eliminated Wyrm from Series 9, although it was later reinstated when Frostbite was too badly damaged to continue the Head-to-Head round.|
|Rusty||Recoil||Heat 5, Group Battle||Rusty missed with its flip, and threw itself onto its back, where it remained immobile for over ten seconds.|
|The Swarm||Floor Flipper, Pitted||Heat 1, Group Battle||Two parts of the clusterbot immobilised themselves during the battle. Pinza drove over the Floor Flipper and was thrown onto its back, unable to self-right. Skye later drove straight into the open pit.|
|Apocalypse||Fire||Heat 1, Group Battle||After getting thrown into Sir Killalot by Apollo, Apocalypse got stuck over the Flame Pit while trying to drive away from the House Robot, having already suffered chassis damage which caused one of its drive chains to become dislodged. These factors resulted in Apocalypse immobilising itself, before being promptly attacked by Sir Killalot and left to catch fire.|
|Crackers 'n' Smash||Fire||Heat 2, Robot Redemption Knockout||In an attempt to retreat from Sir Killalot, Crackers ended up on the Flame Pit, immobilising itself completely. Because Smash was already thrown out of the arena by Big Nipper, it meant that Crackers 'n' Smash were officially deemed immobile.|
|Androne 4000||Floor Flipper||Heat 4, Group Battle||Androne 4000 drove over the floor flipper while gripping Concussion, and became immobile upon landing, also taking Concussion out of the battle with it.|
|Androne 4000||Floor Flipper||Heat 4, Semi-Final||After having the hydraulics system for its crusher ruptured by Nuts 2, Androne 4000 swerved over the Floor Flipper, resulting in it being thrown over and left unable to self-right, resulting in its second loss to the floor flipper.|
|Expulsion, Sabretooth, Thor||Pitted||10 Robot Rumble||All three robots drove themselves into the pit at some point during the battle.|
|Iron-Awe 6||Floor Flipper||10 Robot Rumble||Iron-Awe 6 drove onto the floor flipper during the Fog of War it had activated itself, and could not self-right when turned over.|
|TMHWK||Pitted||World Series, Episode 1, Tag Team||Reversed into the pit after experiencing technical issues, with only seconds remaining in the battle.|
Occurrences in International SeriesEdit
US Season 2Edit
|Spin Doctor||Pitted||Heat A, Round 2||Drove into the descending pit after pressing the pit release button.|
|Brute||Pitted||Heat C, Round 2||Drove into the pit despite dominating this battle against Unibite 2.0.|
|The Gap||Pitted||Heat D, Round 2||One of its wheels became disabled during this battle against Propeller-Head, so it swerved into the pit to avoid further damage.|
|Rosie the Riveter||Pitted||Grand Final, Round 1||Drove into the pit while trying to ram Panzer Mk 4.|
|Propeller-Head||Pitted||Grand Final, Round 1||Drove itself into the pit despite causing considerable damage to Falcon Mark 2.|
|Trilobyte||Pitted||Tag Team Terror, Round 1||Drove itself into the pit.|
|Basenji||Pitted||Annihilator, Round 2||Mistakenly drove towards the pit and swerved itself in.|
Dutch Series 1Edit
|Philipper||Pitted||Heat A, Round 2||Drove into the pit immediately after Bamm Bamm fell off its lifter.|