Sister, Zing, Zat, and Zit
These other four wolves are the pups of the pack (besides Kapu, of course). Sister is seen playing with her brother Kapu, but beyond that she doesn't have much of a personality. As for the others, well, Miyax sums it up best when she says early on that they "had little personality as yet" (1.112). In fact, they don't have much of a personality throughout the novel, but that's okay. They're meant to fill out the pack and provide Kapu with playmates. Works for us.