After drawing the chin guard and again thinking about how Aarock looks like Shredder, I wondered how it would look if his mouth was covered as well.
Given that that mouth is no longer visible attention is taken away from the head. To compensate for this I switch the primary color of the horn back to red. I kind of like the way it looks. I wasn't planning on having full masks for the cyber.fighters. Maybe I'll make it some kind of mode especially since it looks more mech like and I have a soft spot for mechs.
Aarock with his mask on, and Aarock with his mask off