You wouldn't have peeked at the filenames, would you?
Obviously, you're right. The other guy was a background character in a comic worked on by a artist who's done the Legion (meaning an artist who has done at least one issue of a "proper" LSH title, rather than someone who's
associated with the Legion!), but the character is not from his LSH work, and the combination of that and the background nature is why I'd be falling-over-shocked if anyone pinpointed him
Incidentally, I did a simplified version of Quetzal to match the costume Cockrum actually designed, since "why not?" - it wasn't much effort to remove the zips and so forth (I put the side-zips in because there's no way she could possibly wear anything with conventional arm-holes!). Might as well attach that while I'm here...