Probus is a Cane Corso carrying the Aura mark, the sort of pup other pups quietly wait to introduce themselves to. There is a story going around that Probus once heard a bell that rings when nobody touches it answer back, briefly. The unaffiliated treat Probus as proof that hats are optional. Pups who watch Probus too long sometimes get the feeling that Earth is not finished answering. Legendary detail: There is a soft halo around Probus that the Squid Circle insists they can hear humming, like a frequency from the neural empathy mesh refusing to fully shut down, and Luma is one of the only listeners who admits she finds it comforting.