I'm not sure if you've answered this before, but what happened to GHB, Dualscar and E%ectioner? They're highbloods, so they'd still be alive during karkats session, unless they were on planet when the game started? Or did they die in the vast glub? Or are they alive off planet due to Condy's banishing of all adults?

Dualscar was killed by GHB. GHB and Darkleer both eventually died prior to hivebent starting