Intergalactic

 was an American animated science fiction-comedy television series, being created by TBD. It was produced by Nickelodeon Animation Studios and it aired on Nickelodeon from October 12th, 2001 until December 11th, 2009.

Synopsis
When a geeky scientist finds an alien teenager, they go on wild and odd adventures as she often creates a series of shenanigans to escape from kind of harm.

Main

 * Dr. Henry Yesser (voiced by Dee Bradley Baker) - a geeky human scientist who encounters Crystil and tries to keep her safe.
 * Crystil (voiced by Hynden Walch) - an annoying teenage alien who finds Henry and helps him with several tasks, ranging from simple ones like getting eggs to extreme ones like TBD.

Supporting

 * Elle Yesser (voiced by Elizabeth Daily) - Henry's caring wife who serves as the voice of reason for some of Crystil's antics, often treating her like she was a daughter to her.
 * John Thomas Smith (voiced by Kevin Michael Richardson) - Henry's hungry best friend who knows about Crystil's existence and occasionally TBD.
 * Zalbus (voiced by Charlie Schlatter) - a cocky teenage alien who Crystil has a crush on, being rather TBD.
 * Evan Laurens (voiced by Maurice LaMarche) - Henry's workaholic boss who is rather rude towards his employees and TBD.
 * Sarah Andrews (voiced by TBD) - Crystil's TBD best friend on Earth who TBD.
 * Austin TBD (voiced by TBD) - TBD

Antagonists

 * Agent Viper (voiced by John DiMaggio) - a paranoid FBI agent who is obsessed with aliens and often clashes with Henry, suspecting that TBD.
 * Ylanzz (voiced by Kimberly Brooks) - a TBD alien huntress who grows an obsession with Henry and TBD.
 * [female judge] (voiced by Carolyn Lawrence) - a TBD judge who TBD.

Episodes
See List of Intergalatic episodes.

Tropes
See Intergalatic/Tropes.