Alistair Overeem is an absolute beast.
First, he pulverizes Brett Rogers within minutes, calls out Fedor, calls out Werdum, calls out Dana White, calls out Brock Lesnar, and then decides he's just going to go and kick some ass at kickboxing. Lo and behold, he goes to K-1 for the 2010 tournament and fucking wins the title.
THEN he comes back to Japan for their NYE Dynamite event and signs to fight Todd Duffee, the once-rising prospect who recorded the fastest knockout in UFC history over Tim Hague (but got the axe due to "attitude problems").
And to no one's surprise, Overeem just destroys Duffee. In 19 bloody seconds. Enjoy.