I'm enjoying his and Balthier's rapport and would be very down to do Complicated Mentor since Balthier is going to join the villain alliance (initially) and tend toward theft/heist, but he's....realizing that's not very fulfilling anymore and is also adrift. In a crisis, Balthier's moral compass is definitely saving lives and siding with the oppressed or marginalized. He just doesn't like ORGANIZED do gooders.

Balthier is also very eager and curious to learn about Earth and would be 10000% a happy audience to Peter teaching him Gen Z things. He will also embellish stories of home and enjoy that Peter can't fact check it.

Balthier is also 22/23 but pretends he's 30.