'Iris'

"My name is Sou Minori. But papa likes to call me Iris."

Sou 'Iris' Minori is a major character in heart throbbing island adventure

NOTE : This article contains spoilers

Backstory
while traveling through the Sinnoh region, Vividoria had found an orphaned child. Knowing he could be good for his plans, he adopted him. Ever since then, Iris had thought of him as a father, calling him 'papa'. However, Vividoria didn't return his feelings, he only needed him for his plans. When Iris became 9 years old, Vividoria immediately started doing tests on him and modifying his body.

The tests were extremely painful for Iris, and with each one, Vividoria had made sure that he was ready for his first kill.

Sometime later, he was given his first assassination mission. It was a scientist by the name of Oliver. Iris had been more than happy to get his first mission and wanted to prove himself to his father. When he left to go do it, his victim in question had ended up disappearing. Unable to find him, Iris had returned reluctantly, leading to getting him a scolding. Years later, Oliver had been presumed dead, making Vividoria even angrier to the point where he had kicked out Sou to raise his sister, saying that he'd never kill anyone and be a failure. Ever since then. Sou had been driven to find a victim to spite his father who doesn't believe that he can do his life's work.

Personality
Ever since he was a child, he always had a homicidal side to him due to careful grooming by Vividoria. He's violent and doesn't hesitate to slash his sword at someone in an attempt to kill them. He's puerile, sarcastic, and gets bored extremely easily. Although he has a lust for fighting, he is, surprisingly, not the type to fight head on. He finds the upmost importance in planning ahead. He treats fighting like an art, a sport with rules, and he'll do anything to honor them

Due to never being able to properly socialize, Iris has trouble talking correctly to others. He has a bit of trust issues with others since Vividoria had ended up throwing him away, assuming that others would use him and throw him away the same way, so he avoids trust all together. He doesn't make close contact with others