Beholder

Beholders are strange monsters from the Dungeons & Dragons franchise and are considered one of the most famous enemies in the game, having inspired countless other creatures in other works of fantasy and sci-fi - they recieve their name from the fact that they are orb-shaped creatures with multiple eyes connected to their bodies via stalks (a bit like slugs) - they are often capable of floating and are described in the D&D universe as belonging to the "Abberation" class of beasts, meaning they are completely alien in design and purpose.