The Green Mouse was a loanerbot that fought in the first season of Robot Wars: Extreme Warriors. It fought exclusively in the Robot Rebellion under the controls of Team Katana, but was eliminated in the first round after getting overturned by Tricerabot. The Green Mouse also competed in Nickelodeon Robot Wars under the name Squirmin Vermin, again appearing solely in the House Robot Rebellion. At the controls of Team Chippermonkey, it was defeated in the Rebellion after sustaining damage and getting dropped out of the arena by Sir Killalot.