Dexter

Dexter is a boy genius and the title character of the Dexter's Laboratory animated television series. His voice was originated by Christine Cavanaugh.

One of the youngest and most intelligent minds, Dexter hides a private laboratory within his bedroom that extends far below the house. From here, he has experimented with countless machines and inventions, yet his ambitions have either failed; or been destroyed by his sister Dee Dee, who is usually in the way of breaking into his lab. In spite of it all, he lives in an average suburban home with his mom and dad, both of whom are unaware of his secrets.

TV series

 * Dexter's Laboratory
 * The Powerpuff Girls
 * 1.2B "Powerpuff Bluff" (no lines)
 * 3.3 "Criss Cross Crisis" (no lines)
 * 4.1 "Him Diddle Riddle" (no lines)
 * 4.9 "Forced Kin" (no lines)
 * Space Ghost Coast to Coast
 * 9.1 "Dreams" (mentioned)

Films

 * Dexter's Laboratory: Ego Trip

Dexter Sells Out
Dexter appears in a romantic Cartoon Network bumper with Velma Dinkley.

In The Grim Adventures of Billy & Mandy episode "The Grim Adventures of the KND," he is one of the characters that explode out of the Delightful Reaper.

In the "Once Upon a Toon" segment of MAD, Dexter joins Henry Swan in restoring all of the Cartoon Network cartoons' memories. He is shocked to find out his sister Dee Dee was the mastermind behind all this.

In the Steven Universe and Uncle Grandpa crossover episode "Say Uncle," Dexter's name is on Uncle Grandpa's list.

Behind the scenes

 * Dexter's from "Changes" were used in the Space Ghost Coast to Coast episode "President's Day Nightmare."
 * There was a character resembling Dexter in the The Powerpuff Girls episode "Powerprof."