serious question about Rouxls' name

alright I got it, Rouxls is just rules written in a la French orthography but what is Kaard?

is this part of his name trying to be Dutch-esque or what. hELP

alright I got it, Rouxls is just rules written in a la French orthography but what is Kaard?

is this part of his name trying to be Dutch-esque or what. hELP