Mark Justin Roiland is an American voice actor, animator, writer, producer, and director. He is best known as the co-creator of Adult Swim's Rick and Morty and its subsequent franchise. He voiced the show's title characters Rick Sanchez and Morty Smith until 2023. In addition to Rick and Morty, Roiland is the co-creator of Hulu's Solar Opposites, in which he voiced the main character, Korvo until 2023. He has also played Earl of Lemongrab on Adventure Time, Blendin Blandin on Gravity Falls, and Oscar on Fish Hooks. He founded the animation studio Justin Roiland's Solo Vanity Card Productions! and the video game studio Squanch Games.