✰𝙾𝚗𝚗𝚒𝚎✰ [3]

Age: 15

He is a fair-skinned boy with a pointy-toothed smile, and has blue-green eyes with a slight shadow under them. His hair is cobalt blue and is tied in a ponytail with a hair tie that matches his eyes. He also has long bangs that are swept to one side. He has a chilling look and is usually hunched over.

He wears a grey t-shirt with slightly darker grey edges or a sweatshirt rolled up to the elbows of the same colour, and blue jeans that are a darker shade than his hair.

Onnie was once a weak, scared, and innocent child who everyone picked on and beat up on. After being saved as a child by Deuz, he became a restless person who has become a more rebellious and brave person, although he still retains a certain innocence and has shown moments of childishness. He also became a much more violent and closed person who can't stop arguing with the people around him, especially Oxy. Because he was bullied as a child, he shows no fear in bothering other people and causing mischief for fun.

However, he shows a lot of affection towards the Nightmares and sees them as a true family. While he has shown confidence and arrogance in the series, in the song A FRIENDSHIP it is shown that he considers himself inferior to the other Nightmares saying that it is impossible for him to win on his own and described himself as "another very easy obstacle to overcome".

In the song he also showed himself tired and lonely, saying that he has kept his problems to himself and that he is scared to speak up and tell the truth. According to the lyrics of the song, he shows regret for his actions and wishing that people would forget everything. He showed a lot of fear of making friends and learning to ask for forgiveness from people he hurt.

He grew up in a marginal and cruel neighborhood, where he was the target of people who limited themselves to hitting him and mistreating him for being too weak, frequently having bruises on his face due to the blows he received.

One day, Deuz stopped his attackers and soon they became friends because he saw in him a hope of becoming stronger. Soon after, the rest of the band members joined and they no longer saw him as weak.