Dr. Sam Wu or “Gravititan” is the only hero on the team with no powers, her powers of gravity manipulation come from the gauntlets she designed, she has 3 phds and an IQ of 160, she is very motherly with her teammates and cares a lot about them she tries her best always, she is dating Jetstream and is very happy. Her intelligence makes her invaluable but her competitiveness can be a flaw. Her costume is blue and black and she wears goggles.