Their moirallegiance isn’t gone into detail in the Flash that they appear in, Horruss only states that they decided to become moirails after seeing how close Equius and Nepeta were.

😎

Equius *nods approvingly* 👍
That is all

The abilities of the Blood aspect aren’t explored a lot in canon but there are some interesting theories about the aspect. No, the Blood aspect isn’t specific to Karkat, Kankri is a Seer of Blood.

That is what I would like to know

She is old grandma and took control of greatgranddaughters so they would join the family business of being cruelty queens

Her lusus is never revealed but it was probably some sort of high blood sea creature like the ones seen here.

Merci beaucoup, je suis d'accord

Feferi uses an ipad instead of a computer for trollian. 

Sollux is short for Solluxander