His horn may have been broken during his robot fights. Paradox Space has had 3 different instances of his horn breaking.

Bec Noir was going to use them to enter the trolls’ session and the exiles tried to stop him from doing so.

It happens during [S] Cascade. 

Meenah bullied her because she thought making her fellow players more aggressive would help them win the game. She pushed Damara too far and Damara then flipped her shit. That’s the only reason stated for her snapping as far as we know. 

No, the Scratch is just a reset button on the session in case it’s messed up beyond repair. 

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. 

Yes, it’s Sollux’s nickname for her. 

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