No, it was because she died before the game started.

Caliborn, ARquius and Gamzee’s souls were put into Lil Cal. Lil Cal is used to make Doc Scratch and by extension Lord English do it means that those two characters are a combination of the three characters I mentioned at the beginning.

In a pester log between Rose and Doc Scratch, Scratch told her to consider him her human uncle. Dirk is Rose’s genetic father and Lil Hal being a seperate version of Dirk makes him kinda like Dirk’s brother or Rose’s uncle. And Lil Hal is a part of Doc Scratch. Confirmed.

She did not, there was no minion gain from the 8th planet.

Nope! Hussie has had several people contribute art to Homestuck. If you go to Credits on the top of the site and then to Art Credits you see all the people whose art Hussie used

Retconned Davesprite, yes. But did he hitch a ride from the preretcon timeline? Possibly. We’ll find out soon enough.

Possibly

My guesses aside from nanna/poppop getting laid would be either he’s adopted or nanna/poppop made him ectobiologically.
But y'know if Grandpa Harley could have another kid I don’t see why Nanna couldn’t too.

Because his duality theme runs that deep

I’m sure there are people that’d argue it but I really don’t see a way :/