Pixilart - Pixelated Optimus Prime Head sculpt by AverageJack
Unpopular opinion:ROTB Optimus prime face doesn't look that bad,it looks actually good.Glad to see to this face design make a comeback : r/transformers
How To Draw Optimus Prime Easy, Step by Step, Drawing Guide, by Dawn - DragoArt
Optimus Prime Head Study Transformers 5 by Bradleyfrew18 on DeviantArt
Optimus Prime's face is based on Peter Cullen in Transformers Rise Of The Beasts - YouTube
Optimology - The Church of Optimus Prime
Transformers Optimus Prime Retro Face Badge | All+Every – ALL + EVERY
Transformers: Rise Of The Beasts Honors Peter Cullen In The Best Way