From Homestar Runner Wiki
Biscuitdoughhandsman is a crafty criminal that Coach Z knew pretty well. He is the subject of a drawing Bubs made when he acted as sketch artist for The King of Town, who was trying to describe who had stolen his crown. The King of Town tries to describe Strong Bad with "a head like a big old, round old, red old, nasty old egg," and "hands made like biscuit dough." Coach Z is henceforth determined to catch "Biscuit Dough Hands Man", not realizing that the King was describing Strong Bad. Oddly, Coach Z's reaction and his later statement "Once again Biscuit Dough Hands Man slips through our fingers!" suggest that he and Bubs crossed paths with Biscuitdoughhandsman before (although it might be possible that Coach Z was talking nonsense again, which wouldn't be a huge surprise). His actions, while never clarified, must have been severe, as he is part of the FBI most wanted list, as of Baddest of the Bands.
Biscuitdoughhandsman licensed his likeness to the producers of "exorbitantly absorbent" paper towels despite his obscurity, as seen in licensed.