User blog comment:FutureEeveeKing13/Origins of the Sternritter/@comment-26091912-20151003082124

There's a couple of strong indications that Askin is French: one is the 'Le' in his name, which is french for 'The'.

The other is in chapter 635, where he's running from Grimmjow and stops to have a coffee—he calls it "Cafè au lait", which is french for coffee with milk.

He also mentioned something about 'the way I talk', but that was probably referring to his personality.