this homestuck discourse shit is easy
gamzee kills people because he is trying to spoil the show; he's going off script because he wants to be written out.
before murderstuck, gamzee has no idea that he is a clown. sure, he anoints his face with greasepaint, rides a unicycle, and juggles, but these are serious religious sacraments to him. and, sure, sometimes he trips on his giant floppy shoes and lands face first in a pie, but that's just being blessed with a miracle, because he was just thinking about pie. and, sure, sometimes his friends say things like "HEY ASSHOLE. CLOWN ASSHOLE. YOU WORSHIP A CLOWN RELIGXON. FOR CLOWNS." to him, but he's too zonked on sopor slime to extract any meaning from it.
when gamzee sees the ICP miracles video, he's too sober to dismiss it as a mere coincidence; for once, he gets the joke, and realises that he was the butt of the joke the whole time. he understands that every time he fell face first in a pie, it was the work of an unsen riddler. he grasps that he is, in a cosmic sense, a clown, and hates it.
the next time the curtain rises and hussie says "everyone look! he's about to do something stupid!" gamzee goes shithive maggots and starts mauling his friends and fondling corpses; every time hussie says "don't worry, folks, he can't hear us making fun of him! everyone point and laugh!" gamzee gets angrier. that's what the "are you next?" bit is about - gamzee is aware of, and hates, the audience.
when the murder spree is over, gamzee's beatific grin returns; no longer a look of blank ignorance, but a knowing smirk. he's successfully ruined his character forever - no one wants to see him and no one thinks he's funny. hussie seems to say: jesus you are such a shitty clown. and gamzee's impassive face seems to say: i know.
gamzee refuses to clown out of spite, and hussie refuses to remove gamzee from the story out of spite. it's a committed relationship of reciprocal, mutual antagonism. what i'm saying is that hussie and gamzee ar
