Roboactive Triboniophorus Tyrannus

This lime-green, slug-like creature perches atop your head with an expression of permanent, soulless curiosity. It is perpetually enveloped in a swirling, radioactive purple cloud of energy that suggests it might be more battery-powered than biological. Whether you're looking for a low-maintenance pet or just need to distract your enemies with an unsettlingly blank stare, this sentient gelatinous blob is sure to leave a mark.