Alternate Reality Villains

Villains from or living in alternate realities, timestreams, dimensions, universes, multiverses and metaverses or doing so after the environment or space-time continuum was altered forcing them to leave their points of origin. They could also have come from different realities but now choose to reside in others (e.g. Sunset Shimmer, Siren Head and Rick Sanchez). This also applies if they created realities (e.g. Nobuyuki Sugou).

This can also be applied to time travellers, dimensional travellers and reality-warpers since by altering timelines in dimensions they end up producing new spaces in the fabric of time; due to the complex natures of time and dimension-travel interactions between them and individuals from current times and/or dimensions cause paradoxes that can make points in the space-time continuum fracture or splinter from the original developments.