Ink Sans has a tendency to get too excited about things. He happens to sometimes randomly vomit ink, mostly when he gets too emotionally shaken, whether from passion or shock. Ink does not appear as a perfectly well-behaved character. He can be inconsiderate, or even downright mocking and cruel, with his opinions, and deep down he sees other characters as fake story characters and not as creatures like him. He tends to be somewhat detached from his emotions. He is so passionated about art