i'd guess that kid is actually a demon or something who you will fight in the end..
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could i also recommend another character

Name: Andres
Gender: Male
Adult
Human.
Personality: OVERLY Competitive. Wary and observant but is very clumsy by nature.
despises VELESIANS.
Quirks:
Talks to himself outloud even if others could hear him talk about his supposedly private or secret thoughts.
Loves flowers and makes 'flowery' (flower references and metaphor) when in battle or some important occasions - not everytime, it would make him seem like a fool. - it's more of a punchline thing.
Challenges anyone, anytime, anywhere,for whatever reason he has 'logically' raised.
Additional Details?
Musketeer costume.
Idea for interaction (optional)?
(This is a just a suggesstion since i think the more specific a character is the harder it is to mesh with the others. Use him as you see fit in the overall scheme of things.)
I envision Andres to be some sort of mini-rival (mini because imo he's not a very developed character to become the mainstream rival to the hero).
In some quests he's an obstacle - he and hero fighting over an item or quest.
And sometimes he's a friend helping to kill some enemy or velesians.