Like a hibernating bear, the Heavy appears to be a MEAN giant. Also like a bear, confusing his deliberate, sleepy demeanor with gentleness will get you ripped limb from limb. Though he speaks simply and moves with an economy of energy that's often confused with napping, the Heavy isn't dumb, he's not your big strong friend, and he generally wishes you'd just shut up before he has to make you shut up.
Heavy's bio as described by Telltale Games Poker Night at the Inventory: The Heavy Weapons Guy is an esteemed member of the RED team where he works as a professional killer. When not embroiled in the eternal blood-soaked battle against team BLU, the Heavy enjoys classic Russian literature, listening to tapes and cleaning his minigun. He is as cold and calculating at the poker table as he is on the battlefield. Join The Heavy and his pals for hour upon hour of playful "combat" in The Second Team Fortress, available for PC and Mac on Steam or TeamFortress.com.

-tf2wiki.net

Primary: Minigun "Sasha"
Secondary: Shotgun
Melee: Fists

Cosmetic: Officer's Ushanka