Maurice LaMarche
Maurice LaMarche (born March 30, 1958) is a Canadian voice actor and former stand up comedian. He is best known for his voicework in Futurama as Kif Kroker, as Egon Spengler in The Real Ghostbusters, Verminous Skumm and Duke Nukem in Captain Planet and the Planeteers, Big Bob Pataki in Hey Arnold!, and The Brain in Animaniacs/Pinky and The Brain. Description above from the Wikipedia article Maurice LaMarche, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography
The Simpsons
Family Guy
American Dad!
Rick and Morty
Zootopia 2
King of the Hill
Futurama
Adventure Time
My Little Pony: Friendship Is Magic
Robot Chicken
Jackie Chan Adventures
The Facts of Life
Batman: The Animated Series
The Legend of Korra
Dexter's Laboratory
Star vs. the Forces of Evil
Love, Death & Robots
Kim Possible
Johnny Bravo
Hey Arnold!
The Neighborhood
Teenage Mutant Ninja Turtles
New Looney Tunes
Zootopia
Star Trek: Lower Decks
Animaniacs
Boy Meets World
Duckman
Cow and Chicken
The Batman