Throughout all series of Robot Wars, some robots featured weapons that did not fit into any fixed category. These are known as unique weapons. Unique weapons may still act in a similar manner to conventional lifting/flipping, overhead or rotating weapons, but function in very different ways. Famous and successful examples of unique weapons include the trap mechanism of Series 4 Semi-Finalist Mousetrap, and the 'smothering shell' of Series 3 middleweight competitor Tentoumushi.


A unique weapon is designated by the fact that it does not fit into one exclusive weapon category. The trap mechanism of Mousetrap, for example, functioned in the same way as a hammer (Series 4) or bladed axe (Series 5/Extreme 1). However, its shape and dimensions also allowed the weapon to act as a clamping jaw, which Mousetrap used to great effect as the trap held opponents in place while it pushed and dragged them around the arena.

Additionally, there may be unique weapons that do not fit into any category whatsoever. Examples include the 'smothering shell' of Tentoumushi or the 'wagglers' featured on Darke Destroyer 2.

Advantages and Disadvantages


  • Roboteers can often use the custom weapons to fit in with the design of their robot, for both effectiveness and entertainment. Mousetrap's trap weapon is perhaps the best example of this, adding to the robot's theme and proving to be reasonably effective throughout its performances in Series 4-5.
  • Creating a new type of weapon grants a robot an element of surprise.


  • It is very difficult to predict whether a unique weapon will be effective in combat without any predecessors to compare it with. Unfortunately, most of the weapons listed here proved to be largely ineffective in practice.

List of Robots with Unique Weapons

Robots are listed alphabetically. Robots which are not heavyweight are listed with a green background. House Robots are listed with a red background.

Robot Weapon Picture Series Appearances with Unique weapon Description Advantages Disadvantages
8645T Combination axe/flipper arm 8645t Series 5, 7 The flipper and axe were attached to the same ram, so that when the weapon fired, the axe would lower as the flipper raised. Protected the front and back of the robot at the same time. The weapons offered good leverage to one another, and the flipper could be reasonably effective. It did not allow 8645T to self-right from any position other than on its back.
Big Brother Morningstar mace Big briother S3 offical image Series 3 The morningstar functioned as an overhead flail, which would whip back and forth. Fast attack rate. Had a very short range and was largely ineffective at causing damage. In addition, the mace was prone to falling off and could be snagged by opponents.
Binky Nose axe and Battle sled Binky Series 3 Binky's battle sled was a large wedge scoop attached to a frame. The frame, itself attached to Binky's turret body, was capable of rotating around so that Binky's battle sled had a 360 degree range. Provided a good deal of protection when facing an opponent, as it kept robots at least three feet away from its chassis and internals. Was very slow in moving around, often required torque from the actual robot to get underneath opponents properly. Taking up a good deal of Binky's 80kg weight, often the body rotated and the battle sled remained still whenever the weapon was used.
Broadsword Medieval broadsword Broadsword Extreme 2 The sword was a long blade made out of car springs. It was similar to a spear, but had bladed edges, and could damage opponents by swinging the side of the blade into them. Protected it from spinners, it held off Typhoon for most of their Extreme 2 Middleweight battle. Was long and unwieldy, struggled to hit low robots and had minimal effect on them if the attack connected.
Cronos Crusher/rear-hinged flipper Cronos Series 4 Cronos' weapon consisted of a vertical crusher and a rear-hinged flipper mounted together on the same arm. The leverage from the crusher raised the rear wedge, which was supposedly capable of lifting a double-decker bus. Functioned similar to 8645T, Robochicken and the Series 5 version of Sir Chromalot. Covered the back and front of the robot at the same time. Useful when attacked by multiple robots. Ineffective at self-righting.
Daisy Heavy overhead "Skipping rope" Daisy Series 3 Described as a "skipping rope", Daisy's weapon consisted of a thick metal blade which swung over the robot to strike opponents. Very little is known about the weapon, as it, and Daisy, were never seen in action. It appeared to be able to strike opponents from both the front and back.
Its design would have allowed it to act as a srimech.
Potential reliability issues, although it is unknown whether this was the reason Daisy withdrew.
Had a limited attack range and would have struggled against large opponents, such as its would-be opponent, Aggrobot.
Darke Destroyer 2 Spring-loaded "wagglers" Darkedestroyer2wagglers Series 4 The "wagglers" were two spring-loaded, sharp pieces of metal that would be fired when they came into contact with another robot, with the intention of slicing through an opponent's armour. Could be fired at an exceptionally fast rate, useful for scoring aggression points. Were very weak, and caused minimal damage.
Dome Pneumatic trebuchet Dome Series 5 The trebuchet functioned as an overhead flail, with the "ammunition" a disc attached to the main arm by a chain. Very fast. Did not cause much damage.
Dragbot Movable Spikes On Wedge DragbotArena Extreme Warriors Season 2 The spikes could catch opponents and pull them over the wedge towards the robot's rear-mounted cutting disc. Helped to keep an opponent trapped on the wedge, potentially capable of damaging wheels or tracks. The spikes were not very effective and also could not help the robot self-right as opposed to regular flippers.
Growler Flamethrower Ex2Lightweight.1 Extreme 2 A weapon prohibited for use by competitor robots, which was powered by propane and fired a jet of flame at opponents. Consisted of a blow-lamp rig which would shoot flames through a nozzle beneath Growler's 'tail'. Effective at setting fire to robots covered in flammable materials, such as fur or wood. Largely a visual effect weapon, incapable of causing significant damage.
Extremely limited capacity and poor reliability, causing it to be scrapped after just one series.
Haardvark Grinding blade Henry vs Haardvark Series 3 The blade was originally meant to be interchangeable with a diamond-edged saw, but the saw was prohibited due to health and safety regulations. The grinder was attached to a plastic blade, and consisted of an abrasive saw that was designed to grind away opponents' armour. Made lots of sparks, which would help emphasise damage and aggression in the event of a judges' decision. Fragile, ineffective against tough armour, needed to be held in place in order to work properly.
Havoc Zinc mace 140px Series 2 Interchangeable with a flipper, the mace was a spiked ball attached to a rod on the top of Havoc by a chain, allowing it to move freely. Large attack radius. Ineffective at inflicting damage.
Little Nipper Twin mousetraps Little nipper Extreme 1 Little Nipper wielded two mousetraps that looked like an actual mousetrap. They would bludgeon down on its opponents. Fast. Ineffective, retracted very slowly.
Mousetrap Trap mechanism Mousetrap sumpthing Series 4-5 The mechanism was designed to resemble the actual mechanism of a conventional mousetrap. Functioned as an overhead weapon, with a heavy bar, and then a guillotine blade in Series 5, as the impacting part of the weapon. Reached a Series Semi-Final and recorded four wins, including a victory over the seeded Evil Weevil, with this weapon. Was effective as a trapping mechanism; Mousetrap could easily drag robots across the arena once it had slammed the trap down. Could not function as a srimech.
Was vulnerable to being damaged, as shown in its Series 5 battle against S3.
Ms Nightshade Axe/sns spikes Series 9 The robot's weapon are spikes all around the robot. It can duel function as a sns/axe. The team claim that it can get out of the pit.
Piranha Saw-Hammer Piranha Extreme 2 The weapon was a large swinging serrated blade that functioned like an axe or hammer. Was fast-acting in the first few swings. Not very powerful or damaging. Speed and power decreased significantly after the first few swings.
Roter Osche 'Demolition Hammer' RoterOsche Series 2 The weapon operated like a jackhammer, with the intention of denting and buckling other robots' armour. It was strong enough to damage the arena side wall, but was not seen in action on the televised broadcast of Roter Osche's only battle. Proved very powerful and destructive. Only worked on slow or immobile opponents.
Mounted high, likely too high for it to hit most low-profile robots.
Sergeant Bash Flamethrower Fierydiotoir Series 1-7, Extreme 1-2 A weapon prohibited for use by competitor robots, which was powered by propane and fired a jet of flame at opponents. This flamethrower was mounted on a turret that could rotate 360 degrees. Effective at setting fire to robots covered in flammable materials, such as fur and wood. The turret allowed for a wide range of attack. Largely a visual effect weapon, incapable of causing significant damage.
Sir Chromalot Combined axe/flipper Sirchromalot Series 5, Extreme 1 The flipper's gas bottle was mounted on the flipping arm, and had a spike attached to the rear end which acted like an axe when the arm was raised. It functioned akin to 8645T and Robochicken. Ability to attack from the front and back at the same time. Inaccurate, prevented Sir Chromalot from self-righting after being flipped by Firestorm 3.
Sting Whipping tail Sting Series 2-3 The tail was basically a spiked chain that would whip back and forth quickly. Easy to use multiple times in quick succession. Ineffective at causing damage, narrow attack range.
Tentoumushi 'Smothering Shell' Tento akill Series 3 It also had a small spinning disc, but the main weapon was the 'smothering shell', consisting of a plastic sandpit lid. The shell was used to grab hold of opponents, allowing Tentoumushi to either use its saw to damage them or drag them around the arena while keeping them trapped underneath. It did this to great effect in both the Middleweight Melee and the Series 3 War of Independence. Could easily control an opponent by trapping it with the 'smothering shell'.
Offered an effective weapons synergy with the disc.
Was necessarily fragile.
The Sentinel Spiked club on a modified JCB arm Sentinel Series 2 Intended to push, block and pin robots against the wall or arena floor when they attempted to pass it, as well as to cause damage to their armour, and steer them into other House Robots or a nearby pit. Mounted on a turret that could turn 180 degrees, later 360 degrees in the Semi-Finals, with the arm and club able to lift and lower independently of each other. Capable of stopping opponents from moving. The turret allowed for a wide range of attack. Unable to move outside of its position through any method. Required a human operator inside the arena.
Toe Cutter Spring-loaded blade Toe cutter audition Series 3 The blade was a 5kg blade attached to a clay pigeon trap mechanism, which when fired was intended to slice through an opponent's armour. Was very fast and could be fired in rapid succession. Did not prove very powerful or damaging, had a short attack reach. Low-profiled robots could avoid the blade entirely.
Twister (Dutch) Spinning Triangle Twisterdutch2 Dutch Series 2, Series 7 Twister featured a triangular spinner with blunted vertices that acted as hammers. The entire outer triangle was thick enough to cause damage. The weapon was mounted at a 45-degree angle in Dutch Series 2 and horizontally in UK Series 7. Due to its unusual shape, Twister's weapon cannot accurately be classified as a flywheel or a heavy rotating blade. The weapon was well-designed, with much of its weight away from the central axis.
It was highly capable of damaging and immobilising opponents, especially in the 45-degree configuration.
The 45-degree orientation left the robot precariously off-balance. The horizontal configuration left the space in between the vertices exposed - if that was the point of impact the triangle would glance harmlessly off the opponent and be unable to spin up.
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