You're right, it could be added by CG later; and I hope they fix up whatever's around it, too. Looks like scar tissue more than a natural species characteristic.

I thought about him maybe unfurling his crest, but I think, of the GotG, only Stakar does that.

~ Le Messor
Xander: Maybe we can save the "maybes" for a more dayish part of the day, girls. Potential slayers can function without sleep. Me, I'm no good without my usual ninety minutes.
Andrew: I'm with him. Keep the chatter down. Or speak up so I can hear you. I'm bored. Episode One bored.