Monsters vs. Aliens - Season 1 - Eps 30: The Beast From 20,000 Gallons
When an asteroid is detected heading for Earth, Team Alien is put in charge of the rocket being sent to destroy it. Meanwhile, Dr. C sends B.O.B. to play hide and seek. Unfortunately, he winds up hiding in the fuel being used to power the rocket, and Team Monster must rescue B.O.B. and alter the rocket's trajectory so it'll actually hit its target.
About Monsters vs. Aliens

Title: Monsters vs. Aliens
First Air Date: 2013-03-23
Last Air Date: 2014-02-08
Status: Ended
Rating: 6.122/10 (from 45 votes)
Language: EN
Seasons: 2
Total Episodes: 50
Network: Nickelodeon
Genres: Animation, Family, Action & Adventure, Sci-Fi & Fantasy, Comedy
Production Companies: DreamWorks Animation, Nickelodeon Productions
Synopsis
Inspired by DreamWorks Animation's 2009 blockbuster feature film, this new series follows the further adventures of the beloved monsters- B.O.B., the gelatinous blob without a brain; Link, the prehistoric fish-man; Dr. Cockroach, the half-man/half-insect mad scientist; and Susan (aka Ginormica), the incredible growing woman-as they defend Earth from various alien and supernatural threats.
Cast

Eric Edelstein
B.O.B.

Chris O'Dowd
Dr. Cockroach Ph.D.

Riki Lindhome
Susan Murphy

Diedrich Bader
The Missing Link

Diedrich Bader
Coverton