Demonspawn you see here is Discord and Zecora’s offspring.

I ship it, mind you.

He’s El.

His wings are actually much larger than shown, (I did not have much space) and his ears on the two last drawings are rotated up and backwards for better characterization — normally he’ll rather have them like the first sketch.

Nobody in Equestria really knows him very well… and he’s better off that way. The power he holds is too tempting to be shared.

Tribal Mark means “as above, so below” — whatever happens on any level of reality also happens on every other level.

No, El doesn’t have a “draconequus form“. He was born that way.

He’s a Zedraco.

[For those who didn’t caught up the reference on the black and white sketch, the cheetah marks / mamba tongue correlate to “fast to see / poisonous to talk”.]