Dr. Ivo Julian Robotnik is the smartest inventor of all of Mobius (at least that's
what HE claims, anyway...). He's also the founder of the Super Special Sonic Search and Smash Squad (or SSSSS Squad for short).
In "War of the Villains", Dr. Robotnik created The Ultimate War Weapon, which he himself was very proud of. However, when Verminious SnapTrap came to steal it, an outraged Robotnik send forth his henchmen, Grounder and Scratch. After SnapTrap frightened them off, Robotnik decided to take matters into his own hands. But before he even got a chance, SnapTrap activated a button which caused his fortress to self-destruct. We last saw Robotnik on his backside, unable to get up and crying.
In Need of Help
Later on, at a local club, Robotnik wonders how he'll berid of SnapTrap and re-acquire his fortress. The club owner, Pete, reccomended him to get his hands on The Ultimate War Weapon he invented. Robotnik agreed with Pete's idea, and decided to plan his next move.
Allying With Darla Dimple
Robotnik later recieved a call from Darla Dimple, who needed some help getting rid of Brad Buttowski and Mad Jack and invited him over to her mansion to have a discussion. Once there, Robotnik offered Darla an alliance with him, much to the discomfort of her butler, Max. Nevertheless, Darla accepted his offer and gave him the idea to first prove herself as a worthy accompliss.