The Ruins is the first area of Undertale, which gradually introduces ... Head back to the Napstablook room and then exit to the north. Moldsmal: You can immediately Spare them.

This page tells you how to defeat all the Bosses in Undertale. As such there may ... to move it with force to start the battle with Napstablook. Choose to Cheer Napstablook 3 times in a row ...