Last time we saw young Handmaid was here right before Lord English kidnapped her.

Unfortunately we still don’t know. 

Kurloz woke up from a nightmare and screamed so loud his matesprit, who was right next to him, went deaf. He felt bad about it so he sewed up his mouth. 

Here.

Yes, that’s from this comic by miraculoustang.

“Sollux Captor was most likely named from “Castor Pollux” as suggested by Avi. Castor and Pollux were twin brothers in Greek mythology. In Latin, the twins were also known as the Gemini, of course.” - his Wiki page.

Doc Scratch convinced Vriska to do things she later regretted and even helped. He was the one who distracted Aradia and Terezi while Vriska threw Tavros off the cliff. He also convinced her to mind control Sollux and kill Aradia. He exploited Vriska’s violent tendencies to further his own goals.

No, it does not because when post-retcon Vriska met (Vriska) she was taller.

Karkat likes Dane Cook.

Yes