Not really related to my undead trio, especially as I just peeled the skin, and organs, off the zombie, but I did mainly make his as a catalyst to ramble about headcanons on ~MAGIC ORGANS~. You see that glowing diamond symbol in his empty body? That's his magic organ. Inspired by screencaps like this and this with the apple and cloud inside of them. Guess Big Mac doesn't have one.

I used like a million refs for this one.

Yes I know that skeletons don't have lips, just pretend the piercing is drilling in between his teeth. Also yes Skeletons don't have eyes, but shut up. Also just pretend the scars are like cuts in the bone. I design this so I could repose all the pieces in the future in case I feel like.

I chose a diamond for him for a few reasons, there's at least two BMTH songs that mention diamonds, one with them in the title. Shaky premise, yeah. Also the double meaning of it looking like a chaos emerald because SANIC. Also beauty on the inside shit because he's normally a zombie.

No skeleton penis as horses don't have penis bones. :v

Anyway, ~magic organs~ are the essence of magic inside a pony, so to speak (If other species have them, sure, doesn't matter) the symbol on it differs per pony, but it generally relates to them in some way, oftem complimenting their cutie mark or personality, but unlike cutie marks, it's there from birth, until death, when it fades away. Undead still have their ~magic organ~ and this is what keeps them from falling apart, literally. It's only naturally visible in skeletons however, though zombies can see their own ~magic organ~ if they feel like it. ~Magic organs~ are intangible, they can't be touched or manipulated by normal means, and they can't be lost in uonventional ways, tho it is entirely possible for a pony to lose their ~magic organ~.