Prompto does seem more like a Hufflepuff or Gryffindor. Honestly more Hufflepuff than Gryffindor seeing as he is super loyal.
Unfortunately the devils advocate it in me hast to post this. Ten-year-old Prompto was very quiet, reserved and borderline severely shy. we know that he pretty much changed his entire personality to be friends with Noctis, forcing himself to be outgoing and athletic. We also know he has the ability to hide/ lie about himself for multiple years without anyone finding out. So we really don't know how a Prompto that was never given the drive to be Noctis super best friend would have grown up to act. Theoretically he could fall under the house of Slytherin.
Anyway I do actually really believe that Prompto is a Hufflepuff or Gryffindor and I really hope that you fill this prompt because I'm sure it's going to be awesome!
Re: Harry Potter AU
Unfortunately the devils advocate it in me hast to post this. Ten-year-old Prompto was very quiet, reserved and borderline severely shy. we know that he pretty much changed his entire personality to be friends with Noctis, forcing himself to be outgoing and athletic. We also know he has the ability to hide/ lie about himself for multiple years without anyone finding out. So we really don't know how a Prompto that was never given the drive to be Noctis super best friend would have grown up to act. Theoretically he could fall under the house of Slytherin.
Anyway I do actually really believe that Prompto is a Hufflepuff or Gryffindor and I really hope that you fill this prompt because I'm sure it's going to be awesome!