"He was a lot of things to me" "The only conclusion was love"
Add to that, Felix, Walsh, numerous black guards
I’d say they are sticking with BIG villains, not no-name black guards, so we can mostly count those out.
Walsh…maybe….? He wasn’t necessarily a villain because he was forced into servitude.
Felix was a blind follower. But he’s possible, though he doesn’t have a strong connection to any of the main cast, and that’s what those coming back as shades are for.
Pan/Malcolm/Cora = Rumple
Cora = Regina and Zelena (and Snow to an extent)
Ingrid = Emma
Cruella = Emma
James/King George = David
Walsh…might interact with Emma, but Felix is the odd man out because he doesn’t really connect with any of the core in a meaningful way.