Any fighter, any organization. Any time span.
Which fighter has changed the most, physically, in the last decade? Include before/after pics if you can.
My vote goes to Mark Coleman. The dude was INSANE huge back in the day (1996-2006ish). Like Lesnar sized. And he had hair, and his face didn't look like a turtle. I don't even recognize the dude now.
Hard to tell there, but god help me if I couldn't find a pic of Coleman back in the day.