Telamon

Very self-assured: Telamon has that vibe of someone who knows perfectly well that he's good at what he does. He doesn't need to brag all the time; he just acts as if it's obvious.
Proud: mentions that his obsession with power and his growing arrogance were major problems in his history.
Competitive: Telamon's identity is strongly linked to the sword and Sword Fights on the Heights, so he probably enjoys a good challenge a lot.
Intelligent and calculating: I can't imagine him as someone who acts impulsively. He has more of a "I already knew you'd do that" energy.
Quite reserved: Telamon feels much more restrained. Even his design—the hood hiding his eyes—reinforces that feeling.
He has a sense of humor, but it's dry: he usually interprets it as someone who can joke around, albeit with a completely serious expression. That kind of humor where you say something absurd without changing your face.
Divinity: As the god of Sword Fights on the Heights (abbreviated and better known as SFOTH), and of fire, he is often considered superior, arrogant, or even cruel to others.

He wears a long, dark gray robe, quite loose and simple. The upper part resembles a wizard's robe. He has a dark yellow/dull gold hood that falls over his head and completely surrounds the upper part of his face, leaving only a shadow covering his eyes. The sleeves, which cover his arms completely, down to his hands, making them appear slightly larger, are black. Certain parts of his robe bear strange symbols. He has a leather belt with a gold buckle. He has two large, majestic wings on his back and smaller ones behind his ears; their colors are brown and tan, with a golden tinge at the tips. He always wears a calm but menacing smile. He is quite tall and strong. His skin is a bright yellow. His hair is curly and brown.

Master swordsman: his primary skill would obviously be sword combat. He doesn't just know how to wield a sword: SFOTH is practically his domain.
Mastery of the Heights: This would give you a huge advantage in elevated locations, platforms, bridges, and vertical areas. SFOTH is designed around combat at heights and control of these platforms.
Illumina Handling: Illumina is one of SFOTH's iconic swords and is strongly associated with Telamon/Shedletsky in depictions of the character.
Combat experience: He would know SFOTH's mechanics and tricks by heart because he created the battlefield himself. It's like facing someone in a game who literally knows every corner of the map.