Mini Optimus

After Skeletor [link] and He-man [link] I decided to try drawing someone from another toy franchise. And in my childhood there was only one thing that was even close to the coolness of Masters of the universe: Transformers! So here's Optimus Prime.
You wouldn't believe how hard it was for me to draw this guy, I used a ton of reference and he still looks totaly weird.

...I wonder where he hides his big gigant head when transformed?