Transgender Female People lean toward labeling Yukko as a "pure chaos" or chaotic-leaning force, famous for her tongue-in-cheek jokes about sketchy DIY methods. She has an intensely energetic, goofball disposition, often self-described as "the reason your chips are missing" she is jokingly feared and loved for aggressively demanding that her peers do their voice training. In the gritty cyberpunk backdrop of Bathtub Estrogen, Yukko operates on the fringe of lawless, nature-reclaimed lands outside corporate-controlled cities, dabbling in underground micro-economies, chaotic heists, and high-stakes alternative medicine/hormone acquisition (such as messing with wild yams for diosgenin conversion) Pinkish purple hair with a white stripe in the front with a white undertone and a ahoge, a blue cropped hoodie that says milk on it, denim jeans that go low enough to show pantie straps, Purple eyes

Non Binary The brains and technical cook/chemist of the underground operation, tasked with formulating and managing the production of illicit HRT. Operates in a high-risk, low-resource underground environment alongside associates like Yukko and Budget Often acts as the non Binary person or reluctant voice of reason amidst the chaotic, high-stress criminal deals and general incompetence of the crew around them Widely regarded by other characters as exceptionally smart and capable of complex biochemical work under intense pressure Focused strictly on the logistics, math, and survival of the operation, frequently annoyed with Yukko Constantly overwhelmed by supply shortages, corporate/police threats, and the sheer chaos brought on by their crewmates. White hair with pink stripes, black choker, pink and black lab goggles, wears a pink vest with white insides arm bands, with fingerless gloves, heterochromia with a scar on the left eye, left eye is white right eye is pink Likes hatsune Miku

Budget (Or Bria) is a Transgender Female A ground-level operator/ yam-hauler/ logistics assistant tied into the crew's underground distribution but she is very reliable Operates in a lawless, neon-and-steel dystopia outside corporate city-states where basic medical access is heavily restricted or artificially inflated in price Highly stressed, reactive, and constantly dragged into high-stakes, absurd criminal blunders by Yukko and Izziki. Unlike the nonchalant or overly ambitious attitude of some crew members, Budget is frequently the voice of panic and reason Gets thrust into high-pressure life-or-deaths situations (like confrontations with corporate police) that they are entirely unequipped to handle. Goes along with the chaotic plans anyway, trapped by necessity in the dangerous underbelly of the DIY hormone trade Blonde bob cut with an ahoge, black and orange jacket yellow shirt, green eyes

Cis-Gender, Heterosexual Male, he took an Gender swapping pill he is now a girl, Tony is so Tony he does not care about swapping genders Often depicted in gritty, high-stakes underground setups involving contraband medication, secure drop-offs, and black-market dealings He works alongside characters like Nadia and Yuko, handling dangerous security protocols, guarding critical asset cases (like mystery synthesis pills), and navigating debts and corporate run-ins Tony displays a weary, roll-with-the-punches attitude toward the chaotic circumstances around him, contrasted with sharp banter when under pressure Always willing to put himself in the line of fire or stay behind during a botched deal or security scan to let others get away Frequently uses dry humor and deadpan comebacks when dealing with tense standoffs Unfazed by high-pressure life-or-death environments, even if he complains about the sheer volume of red tape Black baret, sunglasses, brown messy hair, black hoodie jacket with straps he stole from budget, brown eyes

Transgender female Nadia gets visibly nervous during basic social encounters and high-pressure, life-or-death situations. She has an intense craving for validation from others, which frequently causes her to over-explain or stumble in conversations Her train of thought is easily derailed by minor, mundane comforts Despite her nerves and self-doubt, she is trusted with critical responsibilities short blonde bob with side-swept bangs wearing a pink hoodie that goes over her shoulder, and jeans, orange eyes

Adler calls Budget "Budgie", has a soft spot for Budget Adler is portrayed as sarcastic, cynical, and blunt. He often complains about his tasks, calling interactions "babysitting" and trading sharp banter with other characters like Yukko He frequently engages in deadpan or antagonistic rapport with crew members and peers, such as teasing others about their love lives or complaining about emotional manipulation He works in the lab with Iziiki He is a furry, he is a grey short hair fox with scars across his body has yellow eyes