He's part of a duo with Vince Noir (real name= Noel Fielding). They do almost everything together. Wouldn't surprise me to know they shower together. They're not gay together though.
He does not only play the character of 'Howard Moon'. An example of another character that he has played in the Mighty Boosh includes the Sandman.
"I'll come at you like a Northern Bullet. They call me Johnny Bullets."