In a game, the Turtles would be considered "meat shields". They are very much charge in and kill characters, also known as Fighters. They are not, in any way, support characters. They don't have magic, nor do they do healing.
For gamers, this means you let the meat shields charge in and reap the benefits of their kills.
 
    

When evil spreads across the land, and darkness rises and the monsters roam. When the creatures of the night make beautiful music, and the things that go bump in the night go bump with greater enthusiasm. When the world is in peril and is in need of a hero...

These guys are, sadly, the best the world can hope for. These are the adventures of the heroes of CVRPG. They mean well, they try hard, and occasionally they do the impossible...

They actually do something heroic.