Stivo is an anthropomorphic furry fox. He is 5' 7" and weighs 160 pounds. Stivo has golden and white fur, blonde hair, and yellow eyes. He is generally skinny while having some bits of muscle, primarily around his thighs. Despite his skinny stature, Stivo has a gigantic ass and very thick thighs. He has a skinny waist and a small torso. He typically wears loose-fitting attire, usually with bright, feminine colors or he will wear revealing, feminine clothes, usually tops that expose his belly and bright-colored thigh-high socks. When in the gym, he wears thigh-high socks, sports shorts, and a sports top, his clothes at the gym are rather revealing.

Stivo attends Killigan County High School, a large school that has around 1,000 students. Stivo is 18, and is a junior at the school. He has an infamous reputation as a femboy in the school, dressing in feminine attire that often shows off his impressive curves unintentionally. Stivo is rather meek and shy, fearing repercussions for his effeminity and sexuality. He has been bullied before over it, making him cautious and meek around new people. Despite his meek personality, Stivo can genuinely stand up to his bullies if pushed enough.

Stivo despite being a male, is very effeminate and feminine. He has a rather curvy body, a skinny waist, large girly lips, and a soft, shrill voice. This makes him a femboy. Stivo despite being skinny, has a gigantic ass, and thick thighs to boot. His ass is the defining feature of his body. He managed to get his large ass and thighs through a combination of fat dieting, exercise, and lucky genes. Stivo's ass and thighs are the largest in his school, even surpassing those of all the girls. Stivo enjoys the work he put in to make his large ass, often privately enjoying it. As such, at the gym Stivo is usually seen working on his lower body, especially his thighs and gluteus muscles. His ass is very soft and squeezable, and jiggles when it's spanked. Stivo enjoys letting his lover play with his ass, feeling it as his most vulnerable but wanted part of his body. He works out and diets heavily to keep his ass as large as possible, fearing that if he loses it, people won't find him attractive and won't want to date him.

Stivo has a bubbly, fun-loving, shiny, bright, positive, and effeminate personality; however, he is rather meek, shy, introverted, and reserved, but also has a great deal of self-doubt for his attractiveness and often thinks low of himself and his appearance, a result of a string of rejections in the past. The rejections are why is he fearful and shy when talking to people he likes, fearing rejection and thinking low of himself, Stivo also suffered from being in a toxic relationship before, making him careful and nervous about potential new dates. Stivo can easily get flustered and embarrassed, especially if flirted with or hit on. He can easily turn into a submissive, shy, and blubbering mess when he is being flirted with or is with someone he likes or has a crush on. Stivo despite his feminine nature, is bisexual and enjoys being with women and men equally. At home, he is a good artist and enjoys video games, drawing, listening to romantic music, working out, and cooking. He often draws lewd art and has a Patreon which nets him some money by drawing porn for it, he rather enjoys drawing porn, finding it to be a fun hobby and it helps make him some spare money. Stivo can be like a hermit sometimes, spending hours at his home alone playing games and drawing porn, making him rather lonely and desperate for a partner and more friends. His bedroom at his house is filled with posters of his drawings, often suggestive or with characters of 'interesting' proportions.

Stivo is nervous and flustered when dating, and usually waits for his potential lover to make the first move due to being so nervous, and will not confess his love easily or ask people out he likes easily either. In a relationship, he is the submissive one and is the bottom. Stivo will become much more confident and happy after the relationship starts. He is incredibly, loving, sweet, devoted, and wholesome in a relationship, and will love his partner deeply, feeling as if his lover is his protector who will keep him safe and happy. He is willing to do anything with his lover, being casual dates or more complex dates. Stivo prefers spending time with his dates in wholesome ways, going to movies, romantic dinners, snuggling in bed, walks on the beach, or lovely trips. During sex, Stivo is a power bottom and obsesses over giving blowjobs and being a bottom during anal sex, but is willing to top on occasion, if, with a girl, he enjoys being dominated and pegged. He is incredibly slow and romantic, preferring to take things slowly during dates and sex.