- "We came up with an idea to enter Robot Wars as we felt that it would offer us some fun and a good chance to learn some interesting stuff. We approached the headmaster of our school after coming to the decision that we would have to rely on the school to fund it. After talking to him he gave the go ahead and told us we had to find a teacher to support us. We gave it some thought and approached Mr Smith, after coming to the conclusion he was the best for the job. He said 'No Problem' and away we went."
- — Biothan website on deciding to enter Robot Wars
Biothan was a robot that failed to qualify for Series 6 of Robot Wars. It was built by students from Bishop Stopford School in Kettering with funding and support from the school and one of its teachers.
Team Doorstop also previously attempted to enter Series 5 with a robot named Doorstop, but lost to Shredder in the qualifiers. They originally planned to enter an upgraded version of Biothan in Series 7, but decided not to enter.
After 2003, Biothan retired from the live event circuit and stopped competing.
- "Increasing pressures from school work and other commitments has prevented the team from doing much towards completing the new building work on Biothan. With 8 weeks of school left, I can't see much more being done, and once we have left, even less will get done, so, it looks like this is the end. Its been a fun 3 or 4 years, hard work, but it has had its rewards. Its sad to think this is it, but thats the way it is. Biothan is in a functional state, no weaponry, but will move once reassembled, so we might be able to attend some live events, but we can't promiss anything. While we are here, the team would like to thank everyone who has offered support and advice over the years. It has been much appreciated, thank you. We have shown all the people who have doubted us that it was possible, and if they still don't believe us, they can look at all the pictures and video on the site."
- — Team Doorstop website on retiring
Biothan was a box-shaped robot painted in orange, blue, red, white and black, armed with three stabbing spikes running at 120RPM (six hits per second) and featuring a slightly tapered front and a horizontal roll cage attached to the side to keep the robot from being stranded in that position. The robot cost £1125.71 to build.
For its intended entry in Series 7, Biothan's weapon was to be upgraded to a 12kg spinning disc, however Team Doorstop ultimately decided not to enter that series.
Biothan was drawn against Chompalot, Edge Hog and Rampage in the Series 6 qualifiers. Rampage was forced to withdraw before the battle, leaving the three remaining robots to fight together. Biothan survived to the end of the battle, but obviously failed to impress the judges as it failed to qualify, unlike its two opponents.
|Series||Biothan Series Record|
|The First Wars||Did not enter|
|The Second Wars||Did not enter|
|The Third Wars||Did not enter|
|The Fourth Wars||Did not enter|
|The Fifth Wars||Failed to qualify with Doorstop|
|The Sixth Wars||Failed to qualify|
|The Seventh Wars||Did not enter|
|Series 8||Did not enter|
|Series 9||Did not enter|
|Series 10||Did not enter|
- Biothan's batteries (which were also used for Doorstop) were lent to the team by Mike Franklin of Team 101, who also gave the team continuous advice and help during construction of their robot.
- The robot's motors where sold to the team by Peter Bignell of Invertabrat, who also gave the team continuous help and advice.