Under the Spell of Transformation: From Dylan to Alastor, Black to Lucifer, and Emma to Seviathan

Question: Write a transformation story of Dylan The Dylanus, Black The Dylanus, and Emma The Dylanus (original characters made by the Deviantart user Dylan613), turning into Alastor the Radio Demon, Lucifer Morningstar, and Seviathan von Eldritch (Charlie Morningstar's ex-boyfriend), all of them from Hazbin Hotel (an adult animated TV series made by VivziePop), complete with (Emma's gender change to male), clothes change, age progression, height progression, and mind/mental change (with the three teenagers' personalities and memories being completely replaced with Alastor's, Lucifer's, and Seviathan's personalities and memories, despite their best efforts on fighting these new memories and personalities). For Dylan's appearance, he is a 4.9 foot tall, 15 year old boy who has a lean build for his size, tan skin, medium-length brown hair (that reaches his chin, although not covering his face at all), and has green irises. He wears a dark blue hoodie, a lighter blue t-shirt underneath, and cyan wear jeans. He also has white socks underneath his black tennis shoes, which have an x-shaped gray marking on each of his shoes' tongue. Dylan is a kind, considerate, smart, and understanding character, who is a love interest to Emma (his girlfriend) and is playful around his slightly older, smarter brother Black. Despite his small frame and being a teen, he goes in the way to protect his homeland against various villains and monsters (always successful, even if some are more difficult than others). Despite these traits, he does have some flaws, such as his intolerance to swearing (which aren't present in his homeland), being quite weak without superpowers (which he actually does not have and only obtains them when using special devices), and has fear of vampires and demons alike since he views them as nothing more than pure evil monsters. For Black's appearance, he is a 5 foot tall, 16 year old boy who has a lean build for his size, tan skin, medium-length black hair (that reaches his chin, although not covering his face at all) with red streaks running down, and has dark gray, almost black irises. He wears a black hoodie, a dark gray t-shirt, and pale gray jeans gray. He also wears white socks underneath his black tennis shoes with golden ankle-bracelets. In addition, Black's jacket has light gray artificial fur on the top and on the ends of the sleeves, where they are outlined by the golden bracelets on top. Black is a serious, smart, considerate, and understanding character, who is a slightly older brother to Dylan, who is more playful and kind. Despite his small frame and being a teen, he, along with his brother Dylan, goes in the way to protect his homeland against various villains and monsters (always successful, even if some are more difficult than others). Despite these traits, he does have some flaws, such as his occasional annoyance to Dylan's playful demeanor, being quite weak without superpowers (which he actually does not have and only obtains them when using special devices), and has fear and demons alike since he views them as nothing more than pure evil monsters. For Emma's appearance, she is a 4.7 foot tall, 15 year old girl who has a lean build for her size, tan skin, long blonde hair (that reaches the back of her neck), and has deep chestnut brown irises. She wears a pink jacket, a lighter pink shirt, gray bra, short, small dark red skirt, dark purple leggings underneath her lighter purple shorts, a pair of pink socks and light gray tennis shoes with a pink heart on each of the shoes' tongues. Emma is a somewhat serious, very considerate, and kindly character, who is the same age as her boyfriend Dylan. Despite her small frame and being a teen, she, along with his boyfriend Dylan, goes in the way to protect her homeland against various villains and monsters (always successful, even if some are more difficult than others). Despite these traits, she does have some flaws, such as her occasional annoyance to Black's technology-making habits that causes problems (for Emma, Dylan, and others), being quite weak without superpowers (which she actually does not have and only obtains them when using special devices), and has fear and demons alike since she views them as nothing more than pure evil monsters. For Alastor's appearance (after Dylan turned into him), he is a slim, dapper sinner demon with beige-colored skin, and usually has a broad smile full of sharp, yellow teeth. He is approximately 7 feet tall and is, biologically, somewhere in his 30s or 40s when he died as a human before arriving to Hell as an immortal demon. He sports a pinkish-red cropped, angled bob-cut with black tips at the ends and two large, black tipped tufts of hair extending from the top of his head, evoking the ears of a deer. The style has an undercut at the back, and two small black antlers protruding from the crown, which can grow in size in his full demonic form. Alastor's eyes have dark-red sclerae, bright-red irises and thin black pupils (which can change into the shape of radio dials when shifting into his full demon form). His forearms and lower legs fade to dark grey, and he has red hoofed toes and red fingers. Alastor wears a red pinstripe coat with dark-red lapels piped with white, which is ragged along the bottom hem. Underneath this he wears a bright red dress-shirt with a black cross on the chest, and long black dress pants with matching bright red cuffs. He also wears a dark-red oval-shaped monocle, rimmed with black, over his right eye. He accessorizes with a black knotted bowtie with a bright red center, black gloves with red at the fingertips, and black pointed-toe boots with red deer hoofprints emblazoned on the soles. Alastor also carries a thin cane with a sentient vintage style microphone attached to it, which he uses to play sound effects and broadcast his voice. Alastor stands out from many of the more chaotic residents of hell for his well maintained amiable persona. He gives the first-impression of a good-natured and charming man, wearing a permanently wide grin on his face at all times. Alastor's behavior, mannerisms, and even his voice are similar to an old-fashioned radio announcer and speaks with a transatlantic accent, often using quaint anachronisms such as "the picture show" and refers to Charlie as a "charming demon belle". This playful dandyish exterior, however, obscures a much darker side to him - one with high levels of self-importance - and he will not hesitate to use physical violence when others don't act in line with his very particular values or expectations. For Lucifer's appearance (after Black turned into him), he has pure white skin, blonde hair, thick black eyebrows, black lips and a mouth full of sharp teeth, with a biologically mid-to-late 20s aged body (despite being thousands of years old and being immortal). He has no visible ears or nostrils, giving him a less "human" appearance. His eyes are yellow with red slit pupils resembling those of a snake. He, like his daughter (Charlie Morningstar), has red cheeks. His eyelids are purple which give the appearance of eyeshadow. He wears a white high collar suit, a black bowtie, black knee-high heeled boots, and a red undershirt with white stripes. He also wears a wide-brimmed white top hat, with a golden snake and red apple over golden spikes reminiscent a crown. On his left pinkie, he wears a golden ring. Lucifer carries an apple-topped black cane that matches his hat. He is slightly shorter than his daughter, Charlie, and his wife, Lilith, but he is still quite tall. Never short of puns, quips, or jokes, Lucifer Morningstar is zany, self-indulgent, easily bored, and jaunty, a witty and charismatic showman with a goofy and silly charm (emphasizing his love of polka music), while simultaneously maintaining an air of regality and menace to avoid making others feel too comfortable around him. Lucifer is a husband to Lilith Morningstar, and they both love each other very much, being described as "passionate, cheesy lovers" by some other demons. For Seviathan's appearance (after Emma turned into him), he is a humanoid demon with dark bluish gray skin and dark green hair with gray roots. He has dull red eyes with neon green irises. He has thick eyebrows and his mouth is filled with neon green colored sharp teeth. He has no visible ears or nostrils, giving him a less "human" appearance. He is seen wears a green coat with neon green trimmings, green pinstriped pants and a green hat with a light green trim that has eyes and a toothed brim. His suit is accompanied by a neon green ascot and undershirt. Sporting a charismatic exterior concealed beneath a facade of a confident and self-assured "dudebro" persona, Seviathan's life trajectory has been fundamentally shaped by the imposing weight of his family's expectations. For his personality, he is like the rest of his family, hiding behind a façade of power, confidence, and dominance, appearing as the type of demon the denizens of Hell aspire to be like. His public image is that of a rich, young, "chad" playboy or jerk jock who surrounds himself with expensive cars and models, spends the majority of his time partying at prestigious nightclubs, and is swooned over by millions of female demons, even coming equipped with an entourage of demonic sirens who sing entire songs devoted to how he's more "perfect" than everyone else. Never short of snappy one-liners, he boasts his family's influence, wealth, and power and is very sarcastic and passively rude towards others, throwing at time childishly cocky or elitist remarks at most people's sentiments, only ever restraining himself when speaking to his parents. Contrary to his outward appearance, Seviathan employs his confident facade as a shield to conceal a profound struggle with depression. Operating under the mask of a "dumb jerk chad," he strategically navigates a persona that contrasts with his genuine emotional state. While the world perceives him as a seemingly brash and confident figure, his true nature belies this image. He possesses a high level of intelligence that's obscured by his assumed persona, and he carries within him a tragic narrative shaped by centuries of both physical and psychological abuse inflicted upon him by his own family. This history of mistreatment has left him as a poignant and misguided individual, fractured by the weight of his past.The charismatic and somewhat dismissive demeanor he displays serves to uphold his family's outward reputation and to meet the expectations of his overbearing father. This charade is rooted in his desire to prevent the horrifying fate that awaits him should he falter in executing his father's ambitions. While charismatic, somewhat rude, and laid-back, he has a very "done with everything" attitude, and is clearly depressed and unmotivated. Deep within, he harbors a longing for genuine affection, a sentiment he carefully guards due to its taboo nature in the Hellish society. When not at parties or gatherings he tends to keep to himself in his palaces and maintain his exotic fish collection, read books and watch bad Hell Idol auditions on Voxtube. Mostly as a result of his public persona, Seviathan is quite a ladies' man, having dated numerous female royals and supermodels in order to keep up appearances (which has gotten him into many controversies and scandals), though most of these relationships were very shallow and without love. He is considered to be very attractive among Hell's society, with Charlie, Verosika, Angel Dust, and Asmodeus commenting on his good looks. He is deeply insecure over himself and incredibly desperate to win his father's good graces, showing extreme anxiety at the thought of being discarded like his thousands of siblings. He has the tendency to deflect or react irritably if others attempt to reach out to him or express sympathy towards him, as shown by him threatening Fergus and Charlie on the occasions they attempted to convince him on leaving the Envy Ring to escape his family. There should also be quotes from the characters in this story so we know what they're saying and what they're thinking.