*Note this only a theory so no fighting and don't take it too seriously. It's highly unlikely this is true because it wasn't in the comics but hey the Tom Spidey movies aren't based off of comics. Same with AOS so there's still a chance! Enjoy*

So the theory goes that the reason why the Wakandan's call Bucky "White Wolf" is because he has the abilities to transform into a white wolf. It also goes that this is the true reason why Hydra kidnapped him so that they could train him to use his powers over time. The theory suggests that his powers are unlocked in "Thunderbolts". I think it's a fascinating theory, how about you?