Puppet

Sometimes, that was all Arlo felt like. A puppet moving on delicate strings, completely controlled by someone else's hands.

He's supposed to be working for his aunt, for EMBER, and he hates getting attached to people.

Really, companions are a nuisance.

Or

Arlo's a spy for EMBER from his aunt, and he's here to keep tabs on all the elite and high tiers. It's unfortunate that nothing has ever gone the way he wants it to.