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"GRAAAAAHHH!!!"
[The [Abandoned Failure of the Laboratory of Madness: Lv225] roars with beastly fury!]
Although it had the limbs of several animals and many heads, the creature seemed to hold some sort of humanoid shape. Its torso looking like that of a huge gorilla, or maybe an ogre of some sort.
Several legs attached below, making it resemble a centaur with a long bug-like abdomen with dozens of legs attached to it.
Its torso had two "main" arms, resembling giant arms like those of ogres, covered on many strange tattoos imbued with Miasma and Nether to empower its strength.
It also had two other pairs of arms, the second pair were like giant bug-like pincers, resembling the pincers that scorpions would have.
And the third pair of arms were much smaller human-like arms, imbued with countless runes of magic, both palms holding bright eyes.
Check "The Protagnist's Sister Is Actually the Strongest"!