Karkat is continually completely confounded by Gamzee. And hates it. And also, he doesn't want to believe that Gamzee's going to start killing people. /sobbbb

But yeah, they're basically bros forever.

Edit: OKAY WAIT, I realize I need to say more on the killing people thing. He's basically realized that that is going to happen and there's nothing he can do about it, but he really, really can't hate Gamzee for it the way he can Eridan. Because Gamzee's just....Gamzee.

It actually kind of really saddens him. Which is strange and disconcerting.