Ian Spanier

The 'Real World' alum did it for a very special cause.

'Challenge' Champ Zach Nichols Chopped Off All His Hair And Man, Does He Look Different

For as long as we've known Zach Nichols -- from "Real World: San Diego" in 2011 followed by four subsequent "Challenge" appearances -- just like the biblical figure Samson, the muscleman's locks have grown longer and longer. But the "Battle of the Seasons" champ recently opted to cut his tresses, and the trip to the salon for the mane makeover was for a fantastic cause.

Zach Nichols' Instagram

The Thor lookalike teased (no pun intended) his new style a week ago with this Instagram snapshot of his freshly chopped strands, along with a Wigs for Kids donation form. The non-profit organization has been aiding children who have suffered from hair loss since 1981.

Z kept the short look under wraps for a bit of time, but his "Battle of the Exes 2" gal pal Jenna Compono finally unveiled her guy's brand-new 'do. Drumroll please...

Jenna Compono's Twitter

"So everyone's been dying to see his new haircut!!! Well here it is!" the "Ex-Plosion" castie captioned the above Twitpic, which features the trivia master's slick, cropped style.

+ What do you think of Zach's new tresses and his heartwarming decision? Tell us in the comments!