Justin Roiland was born on February 21st, 1980. He grew up on an almond orchard in Manteca with his parents and younger sister, fashion designer Amy Roiland. He is well known for being the voice of Oscar on Disney Channel's animated series Fish Hooks, Blendin Blandin on Gravity Falls, the Earl of Lemongrab on Adventure Time and Korvo on Hulu's Solar Opposites (co-created with Mike McMahan). He is also known for the Channel 101 shorts he made in his early career, including House of Cosbys and 2 Girls 1 Cup: The Show, a sitcom adaptation of the infamous Internet meme.
- Rick Sanchez (and all alternate versions of Rick)
- Morty Smith (and all alternate versions of Morty)
- Mr. Meeseeks
- "Rixty Minutes": Ants in my Eyes Johnson, Gazorpazorpfield, Baby Legs, Real Fake Doors Salesman, Tophat Jones
- Mr. Poopybutthole
- Taddy Mason
- "Interdimensional Cable 2: Tempting Fate": Randy Dicknose, Eyeholes Man, Jan Michael Vincent, Stealy, Comedian, Michael Thompson, Pichael Thompson, Octopus Man
- Truth Tortoise
- "Rick Potion No. 9"
- "Rixty Minutes"
- "Interdimensional Cable 2: Tempting Fate"
- "Look Who's Purging Now"
- "Morty's Mind Blowers"
- Justin owns two dogs, with "Jerry" being the inspiration for Snuffles and Jerry.
- Co-hosted The Grandma's Virginity Podcast with Ryan Ridley and Jackie Buscarino from 2010 to 2016.
- Provided additional voice work for the Pocket Mortys game.
- Justin writes the humorous episode descriptions that are seen on TV listings and streaming sites.