Nebula has long blonde hair (dyed from the original blue), dark blue eyes and blue skin. She is ruthless and often sadistic, even as a member of a superhero team. She clearly demonstrates qualities of a great leader, warrior and strategist, but voluntarily avoids a leadership role to prevent losing control. She is often petty, jealous and vindictive, but she is also loyal to a fault and self-sacrificingly protective of those she cares about, although she acts rough and tough to hide it.