John the fighter is one of the adventurers who accompany Aura in Roya.
He is initially met in the Northern Mines but is usually to be found in the Trademond Adventuring Guild where he has various interactions. He will join Aura during specific quests. He is a potential cheating partner (see Lewd Scenes).
While at the Guild they will gain 1 XP per day. By talking with them you can ask about the following subjects:
Starts at level 1 with the following:
HP: 47
MP: 0
ATK: 14
DEF: 18
MATK: 0
MDEF: 3
AGI: 12
LUCK: 10
Resists Light
Weak to Thunder
Gains additional stats on level up as well as new skills at specific levels: