Mark Justin Roiland is an American actor, voice actor, animator, writer, director, producer, and comedian, who is best known for being the writer, animator, director, producer, and co-creator of the Adult Swim series Rick and Morty, where he also voiced both of the titular characters from 2013 to 2023.
For Disney, he is well-known for voicing Oscar Fishtooth in the Disney Channel animated series Fish Hooks, where he also served as the writer of the show. He also voiced a Chihuahua in Santa Buddies, Blendin Blandin in Gravity Falls, the Homework Android in the sixth episode of Future-Worm!, and Doop-Doop and additional voices in Star vs. the Forces of Evil.
Additionally, he has done work with Hulu on the following productions: Solar Opposites as Korvo Solar-Opposites, Chris the Red Goobler, and Kramer Guy, The Paloni Show! Halloween Special! as Leroy Peloni, and Koala Man as Chad Wagon until 2023, when he was let go by Hulu Originals and 20th Television Animation.