Tomas Palacios wrote Avengers: Assemble!, Iron Man 3: Suits of Armor, The Avengers: Battle Against Loki, Thor: The Dark World: Warriors of the Realms, Thor: The Dark World: Heroes of Asgard, Captain America: The Winter Soldier: The S.H.I.E.L.D. Report, Avengers: Age of Ultron: Friends and Foes, and Ant-Man: I Am Ant-Man and Captain America: Civil War: Avengers Declassified.
He co-wrote Thor: The Dark World: The Movie Storybook with Alison Lowenstein.