As you've most likely noticed, Marx's chat boxes aren't "attached" to him. It makes him more "cosmic" seeming. Cause he's outta-this-world after all.
And now you know why Karby was working out at the end of Castle Chaos.
I Think Karby's Gonna Win! (That's Karby, Right?)
MARX, YOU ARE A JESTER. YOU SHOULD HAD UNDERSTOOD KARBY'S MIMICS.
Marx really needs to control his aggressive urges.