From "Metalocalypse: Dethclown (#1.17)"
Gentlemen, satellite photos revealed something very disturbing at Mordhaus last night. One of the members of Dethklok was joyriding with a clown... a rock and roll clown. General Krosier?
His name is Dr. Rockso. He's the rock and roll clown. He does cocaine. I'm afraid that's all we know.
It is the fool that tempts fate. The fool can be the fly on the back of the beast.
I think we should bring him in.
[clearly not happy with the idea
] Yes. I suppose we have to deal with nefarious characters to get close to Dethklok.