Loosely based on Grim-Buster Artwork by MightyLockdown using a 1-step Grimlock fig and Citadel Paints. It is Bumblebee's armored mode to combat Grimlock should he go postal. Similar to the Iron Man's Hulkbuster armor for battling the Hulk.
Oh wow, I've never seen that. Thinking of using the Warrior Class mold as well. Here's the art that inspired it.