Seraphim!Sans

Seraphim/The Thought Sans's story with the team takes place in his own timeline after the comic, he at the time had no idea what the world outside his universe was like, however this would soon change. He was approached by Ink Sans who asked for his help and informed him on everything that was happening. While Sans did like his offer many of the children opposed not wanting to risk his life, but the vote was broken up by Frisk who agreed to travel with Ink. He's an infinite being similar to Asriel Dreemur, however, take his abilities with a grain of salt for the only time we do see him fight is against Gaster in a weakened and badly damaged state.