Triple Dust Sans

Dust Sans was killing Frisk in an endless loop, after this, sans goes crazy and obsessed with power, so he takes the 7 human souls and breaks the barrier leaving Frisk behind (Note: all monsters in the underground have already been killed) and on the surface the sans starts killing several humans to steal the soul getting stronger and stronger additional notes: because of his high level of power, sans started to look distorted, making him look like an Anomalia.