Elysian
Olympian
alien
arcane
barbarian
barbaric
barbarous
beatific
beatified
blessed
celestial
eerie
esoteric
ethereal
exotic
exterior
external
exterrestrial
exterritorial
extragalactic
extralateral
extraliminal
extramundane
extramural
extraneous
extrapolar
extraprovincial
extrasolar
extraterrene
extraterrestrial being
extraterritorial
extratribal
extrinsic
fey
foreign
foreign-born
from on high
glorified
heavenly
hypernormal
hyperphysical
in glory
intrusive
mysterious
numinous
occult
otherworldly
outland
outlandish
hypothetical creature
ET
Mayan
astral
clostridium
corporeal
dokaalan
fungal
humanoid
indigenous
interplanetary
lunar
nonhuman
off-world
parasitic
pre-columbian
self-aware
sentient
space-traveling
telepathic
terrestrial
unicellular
unidentified