Eyyyy here's another Troll OC of mine named Yurrika Shounu, and her Lusus, Ryuga, which if actually in the story line I guess would supposedly be nicknamed FlapCatThing since Ryuga is like a giant cat creature with wings.

Yurrika is an Azure Blood ((which would be above Vriska and below Equius in the blood color social status thing)) troll with a angry/mischievous cat emoji symbol who enjoys humorous furbeast/cat videos, Cooking things to the extremes ((mostly ends up burning a bunch of it and setting the kitchen on fire daily so her Lusus literally yeeted the stove/oven-like object out the door almost hitting a passing by Mustard Blooded bystander troll)), and punching things repeatedly when angered.
((Based blood color off of Fir3h34rt's Comprehensive Hemospectrum Chart found by searching "troll blood colors" on google images))

Ryuga's Lusus species is called a Feraline, and is a semi-rare species of Lusus. Getting chosen by a Feraline is an honorable event, however Feralines themselves aren't very nobel and are rather mischievous in nature. Although having no eyes in when young and mid-adult ages, they go through a "woke-cycle" that can produce multiple pupiless eyes and increased wingspan along with a second smaller pair of wings located on the hip area above the hind legs ((although sometimes there will still be no eyes produced, the increased wing span and extra pair will still occur to show the peak of maturity)). Feralines mostly can't see, however their other senses are enhanced which allow them to use echolocation and heat sensing to "see" and in order to attach color to things they use scent glands hidden under their facial fur to smell, and of corse taste similar to blind dragons ((basically Terezi and her lusus)) to identify colors and flavors.
Ryuga will basically eat any and as much food as she wants to, doesn't mind being used as a pillow ((or a bed actually since they're 10'2 in length with a density/width of about 6 feet)), and is apparently strong enough to literally pick up an oven and yeet it 13 feet away from the hive.
Ryuga can't fluently speak audible words, but makes warped vocal sounds and some broken speech that makes her kind of sound like "Him" from the Power Puff Girls basically and tends to freak new trolls Yurrika befriends and/or kidnaps with her weird voice tone and freaky fanged smile of a mouth.

The Chat Client Yurrika uses is unknown at the moment, although it could possibly be Rebelgram, but her handle is always BC which is fully BatCatastrophy. She calls herself this because the name was inspired by her dumb Lusus who trashed the hive one day because she had a headache and her echolocative senses were out of balance causing her to run into literally everything despite her other enhanced senses due to her freaking out. Yurrika describes the event as like a when a Human ((Possibly Joey who could have explained the bat like monsters flying everywhere before the portal incident)) from Earth explained Bats and how they fly around depending on motion and echolocation to get around similar to Ryuga. Also Ryuga resembles an Earth Cat also explained by a human who commented on Ryuga's appearance, hence the FlapCatThing nickname, and used it as a Cat-astrophy pun to describe the spastic situation with Ryuga's headache.
So basically imagine a giant cat running around your house randomly except with bird wings and bumping into everything while making upset warped chirping noises and flapping a large pair of wings very loudly during said incident.

Phew! This was a bunch of info! Sorry! ^_^"" I hope I still got my troll vocabulary done ok Im still a bit rusty at it lol. This is just a bit of what I got so far, I hope you like Yurrika and her Lusus!
I technically made up and own the Feraline species so I'm making it a closed species both in and out of the Homestuck/Hiveswap fandom I guess so please don't steal the Feraline design.

Disclaimer: I own my OC of course lol but I don't claim Homestuck/Hiveswap or the Troll species and such which all belong to Andrew Hussie.