Sans and Toriel in T2. After the disappearance of Alphys, the cognitively fading Sans is all that’s left to keep the core afloat. In his time, he befriends the exiled mad queen Toriel. She was forcefully relocated to the ruins after attempting to kill Asgore a few decades ago and lives in delusion.

The integrity soul of T2!UTY, Iris, was Clover’s twin and the reason Clover ventured into the underground in the first place. Their exact fate after escaping the queen and causing the Snowdin Massacre is unknown to all, but can’t be good — that’s for certain.