Agreed, Spear's dad looked more throwback than the rest of their people, strongly suggesting Spear was mixed blood of different lines of evolving human
.
And no coincidence that in the final fight
.
Godsdammit the levels of storytelling they worked into this are wild.
May have re-watched the finale again.
....and of course the Cannibal from the Theory episode totally had the same visual as Spear with a more 'evil' head/face.