Gunhaver
From Homestar Runner Wiki
A member of the Cheat Commandos, Gunhaver seems to be the leader, although Flashfight may be the leader as well. Among his mission credits are leading an action figure storage vehicle attack on Blue Laser, leading a search party to uncover Blue Laser's secret desert headquarters, and staving off the danger of Blue Laser saving oodles of money at Price Style. He is probably from Texas, has cool glasses, a stylin' coat, and, as his name implies, a gun.
He also makes a cameo in an Easter Egg in Teen Girl Squad Issue 7.
Gunhaver is a direct parody of Duke from GI Joe.