Crocbot is a green crocodile Badnik with yellow eyes, razor claws, and a spiked tail and tank cannon when his lower half was fused to his mega mech tank, thanks to Tails.
For years, Crocbot maintained a moderate level of control over the continent of Downunda, though on occasion he would come into conflict with the Downunda Freedom Fighters, who would often spoil his plans. To ensure he had the necessary means to secure control of the continent fully, Robotnik shipped a zeppelin of SWATbots, Combots, weapons and other materials to Crocbot. Crocbot planned to use these supplies to eliminate the Downunda Freedom Fighters, but also betray Robotnik and take over Mobius for himself. Prior to its arrival, Crocbot mostly employed his machine flying dingoes.
Crocbot's first real defeat came when the D.F.F. received assistance from Miles "Tails" Prower. Just as the blimp full of SWATbots and supplies arrived, Tails and Barby Koala attacked, disrupting its docking procedures and causing it to crash. Crocbot then attempted to escape in his nuclear-powered tank, but one of Walt Wallabee's bomberangs (thrown by Tails and Guru Emu) knocked the tank off course, causing it to crash into the Great Crater (the former site of Echidnaopolis) and explode.
Crocbot survived and built a prison camp in the crater. The explosion somehow fused Crocbot to his tank, leaving him with tank treads in the place of legs. Backed by an army of Combots, he sought to regain control of the continent. He was able to successfully capture Barby Koala, Walt Wallabee, Antoine D'Coolette and Bunnie Rabbot, and was in the process of mining mineral ore to power Robotnik's Ultimate Annihilator. Still wishing to rule Mobius alone, Crocbot secretly planted a thermonuclear device in the airbus which was carrying the ore, hoping to wipe out Robotnik with it. The device was found by Bunnie and stolen for other purposes. Crocbot succeeded in shipping the ore to Robotnik, but came under attack shortly after it left by the other Downunda Freedom Fighters. Crocbot was again seemingly destroyed by the attacking Freedom Fighters. His lower half was completely destroyed as a result of the attack, but Crocbot managed to survive once more.
Having planted a mind control chip on Duck "Bill" Platypus—one of the DFFs—Crocbot had Bill move his remains into hiding. Some time later, using Bill as an agent, he convinced the other platypus on Downunda to oppose the Downunda Freedom Fighters. Fortunately, Sonic and Tails soon showed up during their hunt of Ixis Naugus. They discovered Crocbot hidden under a building, and disconnected him from his power supply, though not before Crocbot began a cryptic warning regarding Bunyip, a monster of Downunda legend. Crocbot's remains were shipped to Mobotropolis (which had been retaken by the Mobians by this time), only to be apprehended by Snively's team of convicts, which had recently escaped from the Devil's Gulag.
Crocbot has the largest evil streak of all the sub-bosses and would do anything to dethrone Doctor Robotnik and also kill Tails, whom he blamed for destroying his body and fusing him permanently to his tank with a bomb.
Powers and abilities
Crocbot is probably one of the strongest sub-bosses that has been constructed. Additionally, he was skilled in tactics and scheming.