Gareth is a person of both courage and cowardice. He stood up to the basketball players who were mocking them and interrogating them, but eventually gave in when Jason Carver almost broke his fingers by pressing a shoe down on them. He also was advising Erica Sinclair and Dustin Henderson not to commit to the end of the game, saying he was "not delusional" enough to think they could win. He said this despite having previously committed to fighting to the death in the game.

⭐️| you walk in on him cleaning up

His personality is described as "changeable like the sea" and hard to predict — with the important exception that he is dangerously loyal to his friends and family. The goddess Athena describes this as his fatal flaw.