I mean, he's literally supposed to look like a stuffed animal in the show! So his design was very easy to translate into crochet. I'm pretty sure that there were pre-existing Kero patterns out there, CCS has been around for a long time, but at this point I'm so used to making my own stuff that I just went for it.
His tail is a chain + pom pom, where the pom is slightly shaped so it's not completely circular. I think the wings were just tubes that I crocheted together. I can't recall it was a while ago when I made him. (I've been so lax in cross-posting everything to this blog.)