Most Notable Mario Fanart? [Sourcing your images are encouraged]

metal_mario_trophy_pose_by_maxigamer-darib74.png
 
That Bowser looks like the same Bowser in a bunny Bowser Smash 4 mod.
 
Baby Luigi said:
That Bowser looks like the same Bowser in a bunny Bowser Smash 4 mod.

It's basically the same Bowser model that was created by SmashingRenders.