Been going through some of the Efrafan buns, I don't have a whole lot to say about most of them, they fill out the warren. But there's some characters more of note than others.

In the sequel novel he becomes one of the founding members of the new warren Vleflain between Efrafa and Watership Down. I always envisioned him as a bit scrappy looking for some reason, perhaps because he's not a captain, at least in Efrafa.