notes:
he gives his physical bandana to caboose before sacrificing himself in the s6 finale, but still appears with one as a hologram. it's the equivalent to his hoodie on his human design (unreleased). additionally, the reasoning for it is a headcanon - since caboose stuck around him so frequently, he wore it to help caboose remember they were blue team better and then it kind of just grew on him, so he kept it around after caboose was familiar with blue team.
on epsilon, the wing is typically on the right. it can alternate but would mainly only do this for "making drawings look better" purposes.
the ears are pointed/bent upward, meant to resemble "horns" in a way. like church being angry all the time being associated with looking like the imp emoji or something. it's silly.
epsilon can have two wings at once (for epic art purposes) but the second wing is very glitched out in that case (potential ref could be added with that?).
no collar outside of physical form (yeah the collar represents their armor but i think it looks better without it).