Robotic Superstar: Rise of Mettaton EX

Prompt: Write a POV transformation story of a human reader instantly turning into Mettaton (in his humanoid EX form) from Undertale (video game), complete with gender change (if the reader is a female before the transformation, but losing all human private parts due to becoming a robot), voice change, robotification (becoming a humanoid robot), gaining a feminine-looking body (with somewhat large hips and thickened thighs, despite becoming/remaining male), height progression (the reader growing from a normal/average height (5.5-6 feet tall) into a height of 6.93 feet tall), reality change (the reader's real world becoming a world of Undertale), and mind/mental change (with the reader's personality and memories completely replaced with Mettaton's personality and memories (with the program installation (including the installing percentage) appearing in his vision during the mental change), despite the reader's best efforts on fighting off the new personality and memories, and once the program installation is complete, the program installation vanishes from his vision and he completely forgot all about his previous human self, making him completely unaware of ever being a human (which he realizes he was never human to begin with and his human life was not real, which he is happy to awaken from that false life and back to his true/real self), and he remembers that he has always been a human-like robot (he is happy that he has always been a famous robot), having been built by Alphys, and his name is Mettaton). The transformation is permanent (meaning it is forever) and is completely irreversible. For Mettaton EX's appearance (after the reader turned into him), he is a humanoid robot with a slim and shapely body (with somewhat wide hips and thighs, giving him a slightly feminine appearance despite being male, and he is strong and very agile, being both a talented singer and a dancer), complete with long legs and bendy silver-colored arms (his arms are extremely flexible and can bend like springs rather than being like human arms). He has black hair with a long fringe that covers his right eye, pale metallic "skin" and visible metal segments below and above his left eye. He also has a metallic chest piece (his chestpiece is black on the black and pink on the front, with his left pec containing a small dial while his right pec containing a speaker to increase his voice), and black shoulder pads above his segmented arms, which end in gloves. His waist has belt-like two parts that seem to act as a locking mechanism that holds his pink "heart-shaped core". His long black latex-clad legs end in pink high-heeled boot-like feet. The irises of his eyes are hot pink in color. For Mettaton's personality, he is a confident, charismatic, and charming TV host that loves drama, action, and violence. He lives for his ratings and adores performing. He supposedly strikes a pose when he does something wrong and makes time on his various shows to beat up "heel-turning villains." He shows a rather shallow appreciation for existence at times. He has a strong craving for attention and seems very egotistical, shown when he boasts about the beauty of his true form. However, despite his seemingly self-centered personality, he deeply cares about the seemingly positive impact his show has had on the inhabitants of the Underground. He has also shown soft spots for several characters, such as Alphys and Napstablook. He also appears to be among the fewer characters in the Underground that has no hate or prejudice against humans despite knowing about the monsters' history with them, since his initial attempts to kill the protagonist were just him playing along with Alphys's plan, and he outright tells the protagonist he has no desire to hurt humans and is far more interested in simply entertaining. While he did attempt to kill the protagonist, it was to prevent Asgore from taking their SOUL and be seen as a hero/savior to humankind, further emphasizing his lack of prejudice. On the flip side, he has also been noted to be a very demanding boss who is very unpleasant to work for, especially according to Burgerpants, who initially considered working for him a dream, but he has since grown to strongly despise Mettaton. There should also be quotes from the characters in this story so we know what they're saying and what they're thinking. Also, it is a POV reader story, so it should not be in an author's point of view (my, I, mine, etc), and it should be from the point of view of the reader (you, your, etc).