Joaquim Aranha dos Santos is a Portuguese-born American storyboard artist, designer, director, producer, and writer. He is best known for his directing work on the television series Justice League Unlimited, Avatar: The Last Airbender, G.I. Joe: Resolute, The Legend of Korra, and Voltron: Legendary Defender, the latter of which he was also a co-showrunner. He co-directed the film Spider-Man: Across the Spider-Verse.