Normal Sans and Underswap Sans dialogue sprites by iGretz on DeviantArt

Underswap SANS! Battle Sprite (WILL FIX) by TheRealAllanTorngren on DeviantArt

Underswap Sans dialouge sprites (Blueberry) by BlueBoneStudios on DeviantArt

UnderSwap] Sans and Papyrus Spritesheets! (By Addicted2Electronics on Deviantart) : r/Undertale

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Undertale sans sprite sheet by sinful-mistake on DeviantArt

Some SwapSwap Sans Sprites (V5) by KyleBlocks2017 on DeviantArt

Underswaps Papyrus Dialogue Sprites by EllistandarBros on DeviantArt

Custom Underswap Sans And Papyrus Sprites by ImHomieJayDev on DeviantArt

Underswap Sans by MaxDaGamer on DeviantArt

Sans dialogue sprites by BlueBoneStudios by BlueBoneStudios on DeviantArt

Sass41's Onitale Sans trio by AYGoftenover on DeviantArt

Sans With Battle Body by TheRealAllanTorngren on DeviantArt