The Head - Season 1 - Eps 10: Mona's Secret
Jim and Roy hide the orb, but Dr. Elliott has his sights set on finding it. So when they reveal to the group that ""Einstein knows where it is,"" Elliott's spy leads him to it. Meanwhile, Roy finds a mutual attraction with Mona, so he spends a romantic evening at her house, where he learns that she has a tail... and that she's Elliott's spy. The evening ends with Elliott busting in and taking Roy prisoner.
About The Head

Title: The Head
First Air Date: 1994-12-19
Last Air Date: 1996-03-19
Status: Ended
Rating: 7.6/10 (from 17 votes)
Language: EN
Seasons: 3
Total Episodes: 19
Network: MTV
Genres: Comedy, Animation
Production Companies: MTV Animation
Synopsis
Jim (The Head) is an animated mutant super-hero with an insanely large cranium. A freak encounter left him with a problem. A big one: he's got an alien named Roy living inside his oversized dome.
Cast

Jason Candler
Jim / Roy (voice)

Eric Fogel
Ray (voice)

Russ Hexter
Dr. Richard Axel (voice)

Frank Gresham
Dr. Lucas Elliot (voice)

Lisa Rubish
Madeline (voice)