Kella Ser appear to be of the feline family, though of course, with some drastic variations. Most notably, they have a snakelike tail that actually has a mind of its own. Despite having its own brain, tail-head and actual head are closely connected in that they think in unison rather than having individual thoughts; they should be considered a singular unit. Naturewise, Kella Ser are well-suited for investigation jobs. Their curious and attentive natures, coupled with their keen eyesight and acute hearing, make them excellent detectives. However, they also have a bad habit of getting lost in thought, which distracts both heads simultaneously and completely.