James works as scientist interested in finding out the truth about The Demon. He tries to help the team to find The Demon's Light by providing them with weapons and other gadgets. He also fixes Chase McFly when he gets destroyed.
Messenger Deception is James's older sister, and they look out for each other, even when they were younger.
James and Korra have a good relationship as friends, and are shocked to discover they are actually brothers.
James has a crush on Blood Queen, but he tries not to show it.
Chase McFly and James have a great relationship. When Chase's creator lets him go, James takes him in to look after and fix.
Along with a large amount of knowledge, he also has the ability to read people's minds, which comes in useful later in the series.
- James is the only character who believes that The Demon can turn good.