I’m definitely thinking that Walker is affiliated with either Ross (in which case he’s more likely to be an anti-villain and both of them may go through a redemption arc eventually) or someone more sinister (in which case Walker may end up being more of a straight forward hate sink.)
Why is he in blue rather than black?
They could always be saving the more traditional black suit for his eventual acknowledge that he’s not really cut out for the true Captain America legacy; I’ve always thought that the more usual USAgent/The Captain outfit would fit better with a character who know they fit in black ops more than in an inspiring role.
I had a crazy, unsupported speculation idea for Walker and how I would have handled his story before he was confirmed:
- Have Walker be the main antagonist against Sam for the shield and mantle of Captain America in Season 1... but have him walk the fine line between being a jingoistic (if not racist) jerk and unquestioning enforcer of Ross/whoever, and someone who does have virtuous motivations and a capacity for self-awareness that could eventually be used to stop him.
- Have Falcon expose his hypocrisy, and gullibility for whatever conspiracy is behind his promotion, to both Walker himself and the world at large... and have Walker end up owning that and eventually not contesting Sam for the shield and ID.
- ...Then Have Walker reinvent himself seeking redemption as USAgent - field leader of ...
The Thunderbolts, a program where he thinks he can still do good work, but is under no illusions about his nature; T-bolts wouldn’t be a true suicide squad rehash, but they would have members like Ghost trying to make good as well.
- He wouldn’t be the main character of a Thunderbolts show or movie, but the authority figure with his own redemptive subplot; he’d be a guy desperate to make sure that even when doing dirty work, he and his team aren’t part of the problem.
- ...Which would end up being interrupted when the other Thunderbolts uncover a plot from Ross/Walker’s old bosses, and sic a new enemy team on them to get rid of them -
The Dark Avengers...
- Complete with another new (and more objectively evil) Captain America they intend to supplant Sam with in Bill Burnside (the jingoistic McCarthy era Cap).
- USAgent earns his redemption fighting a copy of himself to get his team away, and dies, but in a badass way.
(I *may* be slightly infatuated with the idea of a Thunderbolts team composed of publicly known but reforming villains as the underdogs taking on a bunch of charlatans trying to steal the heroic Avengers’ glory.)