To help Mossykit's character develop more, I'm gonna chuck a plot at you guys and hope you like it and join.
An eagle or hawk (or any bird of prey idc) will be flying over camp, and basically all the cats will hide. Mossykit will be amazed, though, and wander out to see what it is, clueless of the dangers. The eagle/hawk/whatever will attack him, specifically on his head, but a warrior will jump out and kill it. He won't be too damaged, but he had a very traumatising experience. Then the actual character development starts.
Mossykit will start having nightmares frequently, and will become nervous, scared and hesitant to partake in activities. He will have a few friends that help him, but there will be one really close friend that basically stays with him all the time and comforts him and all that.
FRIENDS: - I don't really care about how many are here.
Hawkpaw - Daddy Derek
Falconpaw - Daddy Derek
Shrewkit - Squirrelnose
Siegfried - Bun Bun
CLOSE FRIEND: You must be pretty active and willing to take the spot.
Stormkit - Actupocalypse
WARRIOR: Eh, you don't really have a big role. I'll accept the first one that comes.
Leopardclaw - Rainyheart