Reaper being Sombra’s mentor like he was with McCree, except Reaper is actually very proud of her and McCree secretly gets super jealous of their father/daughter relationship, even with them hating each other now.

Young McCree thirsty for approval, always desperately trying to impress Gabriel but never being good enough. But now Sombra comes along and McCree sees them having the relationship he always dreamed of having with Gabriel and it hurts