How To Draw Nightmare Sans | How To Draw Undertale
Nightmare (principally known as Nightmare!Sans) is one of the two main antagonists of Underverse and the main antagonist in the Undertale series.
Nightmare looks exactly like Sans but it’s completely black (except for his white teeth and his blue eye). Sometimes black tentacles come out from his back. Before being corrupted, Nightmare was kind and cared about his brother. After the corruption, he became a merciless sadist.
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