PseudoNightmare, or better known in Pseudotale as Nightmare, is rumored to be an amalgam experiment gone wrong. the story that PseudoDream told everyone in the OverGround is that Imagination was trying to deamalgamatise an amalgamate but it only deteriorated further and that when he tried to regenerate it to try again, it charged it, making PseudoNightmare. Nightmare is always showing up and attacking Dream, who easily and quickly defeats him. he is thought to be a vicious creature without a soul but Frisk’s encounter with him proves otherwise.
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