Demoman

"This is Tavish Finnegan DeGroot. Also known as the Demoman. He's the master of explosions. Kaboom! He likes explosions. Now I like that too, because I'm a good soldier."

--Su Ji-Hoon, The Fortress Team

The Demoman (full name: Tavish Finnegan DeGroot) is the difficult-but-devastating master of explosives. His strength is slightly weaker than a Soldier, but a lot more powerful than most classes due to his firepower.