Terezi also said she was 6 sweeps old and it’s implied that the rest where the same age.

They communicated telepathically while Terezi slept. Otherwise, Terezi was on her own.

No, that’s just the way she is towards him. 

I was speaking hypothetically. In-comic yes, Gamzee has plot armour and we already know when he dies. 

It would come out today.

Yes, sorry I forgot to mention that. No lusus would chose a mutant to rear unless they were genetically modified like crabdad was. Kankri was most likely raised by a highblood since he was a lowblood and that’s what being “culled” meant in Beforan society.

Equius is the STRONGEST of trolls so yes, he could most likely defeat Gamzee.

Terezi’s lusus taught her to “see” differently after she was blinded. Terezi senses colors as odors and sees quite vividly. 

He’s a kind of an asshole.

Yes, the horse calendars are the days that new updates come out. The comic usually updates in about half an hour. It updates at midnight in some undisclosed European country, but if you’re in the United States it updates in early evening. In the west coast it usually updates around 4 pm I believe and around 7 pm in the east coast.