A guest character, Emilie's mother, says "He looks Spanish" in reference to Aramis. Santiago Cabrera, who plays Aramis, is Chilean. I noted that in AAVE, "Spanish" is used for "Hispanic," so it kind of sounded to me like, "He looks Hispanic." That made it even funnier.
Aramis says in reply, "I'm French."
There's a gifset that includes Porthos in s 2 ep. 3 saying, "I'm not a Moor. I'm French." He says it in a South London accent. I said my impression was that a South London accent was a non-privileged accent. I'm not sure if it's the equivalent of an accent from "any borough of New York City that isn't Manhattan" or the British equivalent of AAVE.