I find it interesting how Gutta's albinism is never commented upon. Ever. Perhaps the main characters are variable enough that they just don't care when someone is too pale.
It's common for people with albinism to be portrayed as villains in media. Think of Da Vinci Code, Princess Bride... Either that or they're ostracised for their looks (Maya and the Three), shunned, or treated like ghosts (The Invisible Man, the novel), which often turns them into antagonists as well. The trope Albinos Are Freaks exists for a reason, but I still don't know if it applies to Gutta.
Possible spoilers below!
Catilius dislikes him because Gutta appeared out of nowhere, killed several praetorians and one member of Catilius' new team, taking his place.
He's a bastard, yup, but is it because of his condition? Or is it because he was created to be a servant of evil and programmed to behave accordingly?
Catilius' horses dislike him because he smells of death.
Gutta's teammates dislike him because he avoids interacting with them and doesn't need what other humans need.
The Warriors of the Sun dislike him for trying to openly kill Ali at least twice, targeting Mirina and the twins, who are unable to fight back, and seeking fights with Drudo because a slave must be inferior to a demigod.
Only Canidia treats him well. For obvious reasons.
In my opinion, and you may disagree, Gutta is a monster not because he has albinism. He is a monster who happens to have it.
Without it he'd still be tall, strong, and inhuman, only less visually striking.
