Thomas is a red rectangle and is slightly taller than he is wide.
Thomas is introduced to be confused at his sudden creation and takes note of this odd ocurance, as the game progresses we find that Thomas takes notes often (to mixed reception from his peers) a symptom which may imply Thomas has OCD.
Thomas is often described by the other characters as simple although it maybe that he does not express himself
quite as he should. He is insightful, yet naive, brash, but good-spirited.