Notes:

Brief Mi-Go description. More info can be found on the Lovecraft wiki.

The Mi-go are an extraterrestrial species from the planet Yuggoth (implied to be the dwarf planet Pluto). They are described as winged creatures with large claws and heads covered in antennae.

The Mi-go are a scientifically and technologically advanced race, having a particularly sophisticated grasp of surgical techniques and neuroscience.

The Mi-go can transport humans from Earth to Yuggoth (and beyond) and back again by removing the subject's brain and placing it into a "brain cylinder", which can be attached to external devices to allow it to see, hear, and speak.