i always was confused about homestuck's multiple selves. so there's the real self and the dream self... the real self dies and the dream self becomes god tier, but if the dream self dies before that then you're fucked? like... that one green cherib's dream self died and she's never appeared again. but i think they said that lots of trolls' dream selves died, karkat's died especially fast, but karkat is still alive but can never go god tier?

The dream self only becomes a godtier if your main body dies on your Quest Bed. If your dream self dies then you can still use your Sacrificial Slab at the center of the moons of Derse or Prospit to ascend. Calliope’s dream self was killed and she never came back because Caliborn took over the body. Karkat’s dream self died and he has no way to go godtier because both his Quest Bed and Sacrificial Slab were destroyed by Bec Noir.