Yes those are their actual names, after the backlash they never appeared in published comic(these are from sneak peaks at a then unreleased new New Warriors series) apparently their origin involved inhaling 'internet gas'
Well, I'm pretty sure Apaches are humans and you can't just decide to become one, there's a whole enrollment process with the tribal governments and everything.
(Clarification of intent)
(I understand that "Apache" in the comment I'm replying to refers to a type of attack helicopter; my deliberate misunderstanding is meant to be humorous while also highlighting the tensions between Native people and the Seppo military as exemplified by the latter's naming practices.)