He voiced the titular character of Johnny Bravo, Dexter and Dee Dee's Dad in Dexter's Laboratory, Ace, Grubber, and Big Billy in The Powerpuff Girls, Peter Puppy in Earthworm Jim, Brooklyn in Gargoyles, Dr. Jacques von Hämsterviel in Lilo & Stitch: The Series, Clay Bailey in Xiaolin Showdown, Petrie in The Land Before Time franchise and Kowalski in the Penguins of Madagascar series (replacing Chris Miller).

Boothroyd the Third in James Bond Jr..[5] Afterwards, more roles came which included Brooklyn in Gargoyles, Petrie in The Land Before Time series from the second film onward (replacing the late Will Ryan), Jitters A.

A cult hit show, it continued from 1997 to 2004, receiving praise and multiple Annie Award nominations, including one for Bennett.

Later, he did the voices of Drixenol "Drix" Koldriliff in Ozzy and Drix (replacing David Hyde Pierce), Clay Bailey on Xiaolin Showdown, Mister Boss and Mister Fizz in Codename: Kids Next Door, Raj on Camp Lazlo, Principal Luna and Jan Rongetes (janitor and Swedish air guitarist) on Class of 3000, Azmuth in Ben 10: Alien Force and Ben 10: Ultimate Alien, Mr. Smee and Bones on Jake and the Never Land Pirates.

[6] Since 2006, Bennett has voiced the role of Peppermint Larry in the television show The Marvelous Misadventures of Flapjack from 2008 to 2010, and The Man With the Yellow Hat and neighborhood farmer Mr. Renkins in the PBS Kids TV series Curious George.