As the eldest brother of the Vetrix Family, Quinton is the most rational and calmest of his brothers, even more so than Vetrix at times. When he was younger, Quinton was gentle and mature to others, looking out for his younger brothers and made sure they behaved.[6] When living with Kite, Quinton grew fond of him and taught him how to Duel to protect his own younger brother, Hart. After learning of his father's fate, Quinton became cold and stoic, blaming his father's condition on Dr. Faker.[2] Assisting with Vetrix's revenge, Quinton kept his brothers in line and was usually shown with his father conversing over important issues.

Quinton acts cold and ruthless when he Duels, as well as egotistical, shown by his incredibly angry reaction towards Yuma after taking only 400 damage from Yuma's card effect during the Duel Coaster event.[7] He has an intense hatred of Dr. Faker due to what he did to Vetrix and ruining his family, with which he also blames Kite for doing his father's dirty work.[8] After his father's return to his old persona, these traits vanished and Quinton became kinder and returned to being friends with Kite.[9]