|First Episode||Past Tense|
|Voiced By||Lisa Hammer|
Leslie Cohen was a college student.
Leslie Cohen is a girl that Rusty Venture, Pete White, Baron Ünderbheit, Brock Samson and Mike Sorayama went to college with. Mike was her tutor, and psychologically overvalued her as a love interest. When she slept with Brock, Mike thought that Dr. Venture did. Mike spent the rest of his life preoccupied by her, even going so far as to create "Leslie-Bots", and program a robot of himself to posthumously kidnap his former college friends to punish them for ruining his chances with her.