Somnium Minnie is a fan made antagonist in Abandoned: Discovery Island
Somnium Minnie looks very similar to Photo Negative Minnie, but her accessories are purple, and her body is now black instead of white, she also has no teeth and gums.
If you die too many times on Night 3, Night 4, or Night 5, Photo Negative Minnie will be replaced by Somnium Minnie, who starts on the roof, and after a while appears in the office.
The only way to defend yourself from her is to shut off the power.
She has the same voice lines as Photo Negative Minnie, but they are distorted.