The Energon Pub

Is that mold's robot/mutant head on the same head just you need to flip it or is it just 2 seperate heads entirely?

you flip it

Same head. Just the face that looks non-toon accurate, that's the bottom of the head. The mouth is actually a slot of the ball joint. So flip the head down like (s)he's looking at the ground, and it goes to the regular head.

IIIRC, the 10th anniversery reissue had a really show-accurate mutant head/face...

I beleive it's two separate heads! The robot head is enclosed by a mutant head shield cover.