oh fiddlesticks, i haven't actually read much of homestuck^2... it doesn't sit right with me to leave you empty handed though, so i'll take a shot at this!

i'll say first that i think they'll have the 4 aspects that the alpha / beta humans didn't have (rage, blood, mind, doom) and the four unused classes (bard, theif, sylph, mage)...

yiffany seems pretty mindbound. at first i thought "oh man that name's meant to piss readers off on a meta level" since it's apparently one of the two "non negotiable" aspects of homestuck^2, but at the same time, her "disdain for authority" is giving mind aspect... and a part of me is screaming "Thief" here.

tavvy seems to have a lot of supressed rage in him... and he seems pretty... rage-y overall. like "falls from the ceiling with two cans of faygo, interrupting a discussion about an affair" is about as rage-coded as you can get. the "out of Nowhere" part miiight be a sylph thing? tentative sylph of rage.

harry feels blood-coded. his dad (john / june egbert) named him after someone they looked up to pre-sburb, which is pretty blood-coded imo. considering how the parent-son relationship is here... my guess is gonna be mage of blood.

(how many omega kids are there? i only saw 3 humans, but the "unused classpects" needs 4... i gotta get around to actually readin' this.)