Gavin has grey hair, violet eyes and fair skin. When using his ability, his eyes glow and his skin color turns grey-purple. He normally wear a Wellston school uniform without the tie, and his collar unbuttoned. John knows him as “stone kid”.
Gavin is a typical bully who harasses those weaker than him and is prove to holding grudges. He also takes advantage of his position as one of Wellston's strongest mid-tiers to force his victims to complete assignments for him. Despite all of this though, he acts relatively normal around his friends.
When Gavin was bullying a low-tier for "speaking back to him", John saw him and attacked, giving the victim an opportunity to activate his ability and escape. Taking it as a challenge, Gavin tried to punch John, but his attack was countered. Gavin, enraged by this, activated Stone Skin and injured John, breaking the latter's arm. With John's provoking, he lunged at John, but was thrown out of a window.
When Gavin regains consciousness in a bush under the window, he swears to beat up John the next time he sees him, which happens to be a few seconds later. However, John is accompanied by his best friend Seraphina, who also happens to be the Ace of Wellston. Foolishly, he tries to attack anyway, but Seraphina knocks him across the courtyard and smashes him into a wall seemingly without moving or even making any effort to fight. 
Not even four hours had passed since Seraphina left before a revenge-fueled Gavin attacked John. Despite the latter's best efforts, Gavin successfully caught up to the "cripple" and proceeded to pummel him.
While walking to school, Gavin found himself suddenly confronted by Joker. Recognizing him as the person who single-handedly defeated all of Wellston's Royals, he panicked and ran. Gavin later told a friend about what happened while walking through the school hallway and angrily walked off when he didn't believe him.
Powers & Abilities
- ↑ Cite error: Invalid
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- ↑ Chapter 5
- ↑ Chapter 29
- ↑ 4.0 4.1 4.2 Chapter 25
- ↑ Chapter 127