10 tragic deaths in MMA

#7 Dave Legeno

Dave Legeno as Fenrir Greyback in the Harry Potter series

MMA fans who are also Potterheads will recognize this name. The strapping Londoner played werewolf Fenrir Greyback in the last 3 Harry Potter films, not to mention in other notable movies like Guy Ritchie's "Snatch", Christopher Nolan's "Batman Begins" and Morgan Freeman-starrer, "Last Knights".

Legeno had a stint in pro-wrestling before bagging a role in "Snatch" and between film roles, made his MMA debut in 2005. He didn't the ideal start to his career, losing his first 3 fights, but won his next four, beating legends like UFC Hall of Famer Dan Severn, Kimo Leopoldo and Herb Dean.

In July 2014, Legeno's body was found by a pair of hikers in Death Valley, California. It is believed that dehydration and heat-related issues were the cause of death.