Sink is a rather cute 4-year-old boy,1.05 tall, the youngest son of Sans and Frisk, and the youngest brother between Fran and Sarik. He is someone who is quite tender, and has most of the DETERMINATION that he inherited from his mother. Although, he's not one to talk much. The few times he talks is for nothing. Something quite curious about him is that he is the only one in his family capable of talking to his grandfather W.D Gaster, he only talks to him whenever he is alone...