Rule34.GG

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Regular absorption
alien
art trade
assimilation
blob
blonde hair
blue eyes
bodysuit
brainwashing
clothed
corruption
crossover
enemy conversion
fully clothed
glowing eyes
goo
goo creature
huge breasts
interspecies
kuromaru (mugen)
lab
m.u.g.e.n
metroid
mid transformation
monster
mouth play
multi eye
one eye
open mouth
ponytail
possession
purple goo
rikatsuky
samus aran
slim
slime
slime monster
tentacle
tentacles
tongue
tongue out
transformation
zero suit
zero suit samus