Testis was born well before his sister in the dead of night, perhaps foreshadowing his more easy-going personality. Though they are from the same litter and have similar interest in the moon and lunar events, they could not be more different as far as personality. Testis, while not stupid, can come off that way to those who don't know him just because of how forgetful and awkward he can be. To the surprise of many, both him and his sister insist on remaining in the School of the Wild despite their affinity with the moon. They are not conduits to speak of, so to them being in touch with the Wild makes more sense as it is what is right in front of them.