Condesce is thousands of sweeps old and isn’t a giant so they presumably stop growing at some point

Gamzee used some fucked up magic shit to give John some weird nightmare stuff which made him scribble on the wall and block it from his view.

Because her dreamself was prototyped with Bec and she died on her questbed so her dreamself ascended

She talks about it with Aranea

Burgundy is prone to telekinesis. Animal communing skills are common among Bronze bloods.  Psionics are common among Gold blooded mutants, although most members of caste are likely to develop come psychic ability. Jade bloods can withstand the light of the Alternian Sun and have the potential to become Rainbow Drinkers. Ceruleans can get mind-reading, and mind control powers. Purple bloods have chucklevoodoo which seems able to do many things from mindcontrol to nightmare inducing, whether chucklevoodoo includes all these or if every Purple bloods chuckle voodoo works differently is unknown. Fuchia blood have a psychic connection to Glubglub.

It is unknown if the Vision Eightfold is the source of the Serkets’ mind control abilities so it’s theoretically possible for one to have the later but not the former and vice versa

He presumably, entered with Dave then used the various portals and/or teleporters that are all over the place

They can talk, we just haven’t explicitly seen it