#bearcats

I'll start with gender, because it's more straightforward. I never referred to Hector as anything but he/him. As a cis person, I respect and use people's chosen pronouns, but I don't tend to have trans headcanons for characters unless there's really strong evidence. Adira refers to Hector as "he," and so do I. In fact, Adira straight up says that everyone in the current Brotherhood is a man, except for her.

As for pet names.... you mean what other people call him? I suppose Adira may have come up with one for him, since she tends to call people by descriptor names, since it saves time on learning their real name. So she must have come up with something for him when they first met. Perhaps "Braids" or "Wild-eyes".

But "Hector" as a name doesn't really shorten very well. I can see someone calling him "Hec" and it eventually evolving into "Hell" as a pun (heck/hell), and as a testament to how dangerous he can be and, again, those wild eyes.

EDIT: You probably meant his pet's names and genders, huh? 😅

I have never personally named the rhino anything, but I call the binturongs/bearcats Popcorn and Kernel. I headcanon them as siblings, Popcorn is a female and Kernel is a male.