Campbell (in any of his various famed roles) would be my prime avatar choice for prospective players to mine, deliver mail and fight cute goblins in Free Realms.
Second pick -- but in no way no less manly -- is Bruce Lee. Have you see the face of this late great martial arts master when he roundhouse kicks a human being across the silver screen? Not only does Lee exemplify a pure aura of masculinity, he actually manifests it in a form of pure physical prowess more than capable of breaking any of us in two. Definitely another easy pick.
Finally we come to all-around action hero Bruce Willis, who may have aged since his most celebrated films, but has done so in a truly manful manner. He's easily in the top five men around the world who can properly rock the bald look while simultaneously maintaining his burly composure.
I propose that all three of these man-gods be converged into a 'race of Bruces' for players looking for that complete macho experience can choose in lieu of faeries or regular people.
What could contain such high concentration of element macho that it would pose this threat?
Muscled bacon made men, who posses copious amounts of styled hair in various places on their massively built bodies. Some sport imperial mustaches while others proudly display their thick coats of fur emblazoned across their chests by wearing fancy pirate shirts missing most of their buttons.
Could the inclusion of hair-laden muscled bacon men bring forth an unknowable, yet massive catastrophe upon the world of Free Realms? That is my fear, yes. Sometimes... just sometimes, too much manliness is a bad thing. Hersey, I know -- but altogether truth. SOE could implement them, but they'd be running the risk of destroying our entire solar system in the process.
Alternatively, bringing on Bruce Campbell on as a consultant would be a wise choice as well. Plus, having him do a commercial endorsement is the perfect way to get the word out that Free Realms just became the grooviest place online, baby.