Fan Casting Tentacled Terror in Sort by Tropes

Octopoids and other tentacled creatures are often depicted as terrifying monsters. Squids and octopi dwell in the deep ocean where they can sometimes reach immense sizes, they move strangely with their incredibly non-human anatomy, and they are remarkably intelligent. But mostly, they have tentacles. These are usually seen as completely alien and disgusting: they are slimy, have a whole lot of suckers, and move in an incredibly unnerving fashion. Given all these factors, it is only natural to see many works of fiction featuring creepy octopi as scary monsters the hero has to fight.