Bad People Abuse Animals: Pippa, the Yabbit, was horrified from how Lumi tore apart bugs in her childhood, but the latter justified it For Science!.
Bigot with a Badge: Not Lumi herself (perhaps), but her mod-slash-channel manager Smugdoka, a white British dude, does not like Southeast Asians very much. Which, given Lumi's apparent friendship with Jelly, is...highly ironic.
Big Sister Instinct: Mentioned how concerned she was at her baby brother (AKA Star Bro) 'bulking up' to hit the gym. She then showed equal concern on Tenma hitting on her brother....until Tenma tempts her on the idea of 'Tenma babies' and she immediatly switched. Yeah, its weird.
The Chanteuse: She sings lounge songs when not singing Jpop or meme songs.
Catgirl: In her Catstronaut outfit, she turns into a cosmic catgirl.
Catchphrase Insult: She likes to introduce herself and others as "retards" or "tards".
Comedic Sociopathy: She's callous and has little empathy for life, which can lead to some very humorous moments in games and in collabs.
Cool Big Sis: In one of her Genshin streams, she mentions that she brought her brother his own PC, monitor and internet.
Doting Parent: Sister variation. Based on her interactions with her brother and how much she spoils him, that pretty much is the case since she was Promoted to Parent and ended up babying him in the process.
Exhausted Eye Bags: Her Catstronaut outfit gave her the toggle for exhausted eyebags.
Fashionable Asymmetry: She wears pants with a long right leg and a short left one.
Fetishes Are Weird: Hates incest, which, given that she has a younger brother, isn't a surprise.
Foot Focus: Her more lewd official merch, such as her bodypillow, puts an obviously sexual amount of detail on her feet - Lumi even brought this up and had to begrudgingly agree that, much to her dismay, the artist in charge of that made them look very good.
Fishbowl Helmet: Understandably, her bulky Catstronaut outfit gives her one.
Hidden Depths: Turns out, lemon woman is a pretty damned good operatic singer.
Ironic Allergy: Despite being a literal star, Lumi revealed that she is actually allergic to the sun.
Leotard of Power: Subtle, but beneath her bulky Catstronaut outfit, she wears a high-leg black turtle-neck leotard.
This ended up being real since she boasted on buying and wearing a ballet leotard. Partly because she wanted to do dance/ballet and the other part being that she likes leotards.
Once Done, Never Forgotten: According to Lumi, Star Bro's friends found her "White Girls Fuck Dogs" clip on their personal Discord server. She angsts that she will forever be known as a "Dog Fucker".
Ms. Fanservice: Lumi's previous models and outfits were pretty conservative all things considered. That was until her Catstronaut outfit, which goes completely Stripperific, given that her leotard shows off both an underboob as well as her bottom assets.
Parental Favoritism: Star Bro is the favourite child of the entire family. Lumi speculates that he grew up Spoiled Sweet as a result, which is why he does things that sometimes annoys her.
Practically Different Generations: Star Bro is Lumi's baby brother. In fact, their age gap is so bignote, her little brother doesn't even consider her his "real sister", and it shows. Ouch....
Raised in a Lab: It had been implied that she was raised in a lab to be the perfect organism.
Refuge in Audacity: If it isn't Pippa making yabs, it's her. Due to that, any stream between the two of them are highly likely to get deleted and archived. She sang Rusty Cage's White Girls Fuck Dogs on stream, for example.
The Smart Guy: the Strategy and History Vtuber of Phase Connect, and a known overachieving academic.
Snark-to-Snark Combat: Lumi has one of the sharpest wits in Phase and she'll effortlessly trade barbs with her chat and other notable snarkers like Pippa.
Statuesque Stunner: According to both Dizzy and Lumi herself, she is apparently the tallest out of anyone in Phase-Connect IRL at least, with Dizzy joking that Lumi's legs are like tree stumps. Lumi further elaborated that she is really lithe, with very long legs and a - and we shall quote - "slender strangleable neck". This is also one of the reasons why she attended ballet class recently. She is built for it.
Underboobs: Her top has a gap that reveals the underside of her breasts.
Valley Girl: She speaks like one normally.