UF! Sans Dialogue Box by NimaSakibo on DeviantArt

Sans/In Battle, Undertale Wiki

Sans/Undertale Last Breath, New Undertale Fanon AU Wiki

Undertale endings explained and how to access hard mode

Undertale Papyrus lore, boss fight, age, and more

Pixilart - Bookturn Sans Dialogue Sprites uploaded by HarmlessBleach

Sans - I really hope the dialogue from the post above is actually dialogue from an Undertale sequel he's working on. I was not hoping for an UT sequel, mostly because

Some of Puppet Sans' Favorite Jokes Art Print for Sale by UnderPuppets Shop

HS!Outerhorror by HorrorswapSans - Game Jolt

Genocide Route, Undertale Wiki

Undertale Sans Fight: Remastered by Goop (gaming) - Play Online - Game Jolt