Nice! Here’s what I think:
Haru: Relatively social, but very calm, kind and caring.
Pierre: Very serious, quite calm but somewhat aggressive when in the middle of a heated match. Despite his ferasome arsenal, he displays fierce loyalty and love to those he trusts.
Shohei: Extremely smart (smartest person on Wuhu Island) and very sweet. He prefers it when others are calm and comforted and cares about them rather than himself. Despite this, he has a bitter rivalry with Siobhán.