John Rodney Mullen (born August 17, 1966) is an American professional skateboarder,
entrepreneur, inventor, and public speaker who practices freestyle and street skateboarding.
Mullen is credited with inventing numerous skateboarding tricks, including the flatground
ollie, kickflip, heelflip, impossible, and 360-flip (also commonly known as the 'tre-flip'
or '3-flip'). Mullen has appeared in over 20 skateboarding videos and has co-authored
an autobiography, entitled The Mutt: How to Skateboard and Not Kill Yourself, with
writer Sean Mortimer