The green clownish guy certainly isn't one of the mooks- in the group shot when everyone reacts to the fact that Viole'll be choosing who passes, you can see all three mooks and Mr. Clown. The little guy… well, it's harder to tell for sure, but there are two people in that shot who might be him.

In general, though, the mooks are Da'an, which is an established race, so there's not a huge possibility for them being disguises.