He’s a mean guy. Also, he had just seen Jade die so he probably wasn’t in the best of moods. 

He was cheating on her with Horrus and broke up with her. Meenah bullied Damara about this and facilitated Rufioh and Horrus’ relationship to make Damara mad. 

Talked about it here. 

Space players are required to breed the Genesis Frog and Time players are needed in case a session needs to be scratched.

Tavrisprite exploded because they hated themselves and didn’t want to exist. Fefetasprite exploded because Arquiusprite and Erisolsprite were talking to her separate halves at the same time and it confused her. 

The Beta kids’ Time and Space players were Dave and Jade. If you meant the Alpha kids then the reason for them lacking heroes of Time and Space is because their session was always meant to merge with the Beta kids’ session. Dave and Jade also function as their Time and Space players. 

Well he just saw John a bit ago on the platform so he knows he’s alive

Yes, I believe the trolls are left handed except for Karkat who is right handed.

That’s right

You need a time player. Space and Time are always necessary for a successful session