From Homestar Runner Wiki
The Knight is the bodyguard of The King of Town. He's seen in the King's Court in The King of Town DVD. He wears a full body helmet with a miniature American flag on top and red-striped socks. In The House That Gave Sucky Treats, his Halloween costume was "Idaho", a nod to The Simpsons. He played the drums for the K.O.T.H.S. Junior Varsity Marching Band's parade, and the bass in the band "All the King's Men". Despite lacking visible arms he can handle a throwing spear. His accuracy is a bit lacking, as he couldn't manage to hit the "Sanitize" part of the Multi-Function Dragon. When he speaks, his visor opens and closes like a mouth.
He is voiced by Mike Chapman.
 Character Evolution
|The original design||2000||The King of Town DVD, Tis True, Pom Pom, Tis True,The House That Gave Sucky Treats||N/A|
|The current design||2005||Fall Float Parade, the movies, senior prom||His suit color and shading are lighter. His toes are no longer visible and the flagpole is shorter and gray instead of white. In senior prom, he seems to have five openings in his helmet instead of three. This may be just because he was facing forward.|