Knives is a quiet worker at the Mars Aquarium. He studies both normal and abnormal marine species, which includes the most recent members of the aquarium. He is sometimes sarcastic at the wrong times, and he is quick to notice subtle differences in mood and tends to figure out the situation easily. Does have a kind side but rarely uses it. Can show affection, though it's very rare. Uncommon for him to act distant and separate himself from others