In the long run, Ink!Sans is generally optimistic, has a sense of kindness, loves making art, and can get too excited even to the point of throwing up ink. In the more serious side, he objectively tries to reason with anyone, and only follows who he finds his best friends. However, he has no soul, and relies heavily on emotion vials. If he stops taking the emotion vials for a certain period of time, he will lose all emotion that he once had and is unable to do any sort of action.