Finally reading over Ferrin, sorry for the wait!

He seems like an outlier against the group, which is good! To patient and giving people and one brash forward thinker! let's hope his allies will help temper his rage. I'll also mention that plushies were going to be something the players come across so it's interesting that he wants to collect them! 

As for Corrin, he seems like a wonderful NPC to integrate. If you are willing to allow me to try playing them of course. You seem fairly talented in terms of dnd so feel free to pitch any ideas to me about how I could build a good stat block for him or better roleplay them! I can certainly fit them into the story, as it fits with my campaign's general theme. 

I believe we are just waiting on a reply from [@Moon Man] . I am very excited, and nervous, to get this show on the road!