In the beginning of the Winter Soldier, we meet Batroc, supposedly an Algerian national (so says Pierce later), and if I remember correctly ex-DGSE (which should be incompatible with him being an Algerian, but is not shocking) and ex-French Foreign Legion.
However when he starts speaking, he has the thickest Quebec accent I have ever heard. Indeed he is played by Georges St-Pierre.
The accent is quite surprising to hear for a French native speaker, and I have heard some English native speakers say that they had noticed the accent and found it inconsistent with the character background. The accent is really really hard to ignore and sounds completely out-of-character (imagine a Texan cow-boy speaking with a cockney accent).
I don't really understand why nobody took that seriously enough to give the actor an accent training or redub the few words of dialogue.
Has anybody (from the production or among the actors) tried to explain this accent with a background story?