Look, I am more used when creators show the atrocities of certain villains to make us hate them and see them as evil monsters.
Yet, Hiromu did not have the guts and balls to show Nina’s painful transformation with Alexander into the Ninalexander abomination while Shou Tucker smiles in a disturbing way with his irises shrunken and lifeless; not caring for her cries and anguish.
Look at Yu-Gi-Oh! 5D’s for example; the creators of the show had the guts and balls to show in the 61st episode of how the villain Divine torturing the young brother of Misty, Toby in an extreme electrocution experiment to see if he has useful psychic powers. After finding that he does not have said powers, Divine decided to kill him by raising the power, resulting in Tobi being electrocuted to death as he makes his final screams of agony and the heart rate making a beep sound now that he died.
Link to Episode 61 of Yu-Gi-Oh! 5D’s (https://yugipedia.com/wiki/Yu-Gi-Oh!_5D%27s_-_Episode_061)
But there was none for Tucker’s experiment; all that was shown was him tricking Nina into agreeing to his experiment that she was not aware.
Fans mention that he is the “evilest” character of Fullmetal Alchemist; which means in layman’s terms that he is a genuine supervillain able to make anyone suffer. He is as evil as Divine; making them one in the same as supervillains with evil actions based off of real-life evil.
Apparently, someone told me this:
“From a horror point of view, it's better to leave the actual chimerisation process unseen. After all, what goes on in our imagination would never be lived up to by the manga/show. I'd personally argue that if we outright saw Tucker being evil before the reveal, that would not only lessen the tension while Ed figures it out but make that whole scene less creepy paradoxically.”
I am not so sure as I would rather agree with showing the experiment and outright seeing Tucker being evil.
E-V-I-L.
I mean even Hiromu Arakawa hates him. For good reasons by the way.
So if you hate him Arakawa-sensei, then why did you not make a horrific scene to cement the fact that he is evil and try to warn us of real-life evil like child exploitation and human experimentation?