Mac is the son of Sans and Lust!Error Sans
Appearence EditMac is a blackish-whiteish skeleton with anger issues.
He has 2 eyes, 1 that is maroon and one that is black,
his nose hole is maroonish-blackish, his mouth is goldish-blackish
He wears a purple/blue gray coat, and he has gray shorts
He uses flamethrowers and machine guns.
As said, he has anger issues and gets mad like all the time, if he doesn't get what he wants he goes full rage mode on anyone who is near him, even his siblings or parents