Before shaving it all off, Brad Marchand got a mullet at Monday’s “Cuts for a Cause,’’ the Bruins players’ annual fund-raiser for the Shawn Thornton Foundation, the Boston Bruins Foundation, and the Floating Hospital for Children at Tufts Medical Center. “Oh yeah, I think it really looks fantastic,’’ said the Bruins forward, flaunting his new ’do to the fans gathered at Royale. “Business in the front, party in the back.’’ But the Little Ball of Hate, as Marchand is sometimes called, wasn’t the only Bruin to lose his locks. Thornton, Jordan Caron, Zdeno Chara, Andrew Ference, Dougie Hamilton, Nathan Horton, Aaron Johnson, Chris Kelly, David Krejci, Milan Lucic, Lane MacDermid, Adam McQuaid, Daniel Paille, Rich Peverley, Jay Pandolfo, Matt Bartkowski, Anton Khudobin, and Dennis Seidenberg all had their heads shaved for charity. (Those who didn’t take part, including Patrice Bergeron, made a donation.) In Marchand’s case, the hockey equipment company Bauer donated $5,000 for him to shave his head. “They realize it’s for a great cause and they want to contribute,’’ said Marchand, who has an endorsement deal with Bauer. So who looks good shorn? “Seidenberg, because he’s pretty much bald, anyway,’’ said Marchand. And who looks like a dork? “[Peverley)] looks a little different, and [Chara],’’ he said. Most importantly, will this help the Bruins, who have lost four of their last eight games, play better? “I don’t know about that, but I figure it kind of shows us united as a team,’’ said Marchand. View more photos of the event.