
This little guy is called a blue-ringed octopus.
Their maximum size is around eight inches – about the size of a golf ball, and they live near coral reefs, feasting on hermit crabs and shrimp. Now you may be asking yourself, ‘how can this thing overpower a human?’

They carry neurotoxin roughly a thousand times the potency of cyanide, and enough of it to kill over twenty healthy human beings in the space of a few minutes.
The toxin will stop your heart in under five minutes, but will first have side effects such as blindness and loss of feeling. The toxin is injected via the beak and requires near immediate first aid in order to treat.
Luckily, they’re not aggressive, so you should be okay if you see one. Just get away from it to be safe and don’t irritate it.
This one? No.

This one? Also no.

This one? Maybe.

This one? Hell yes.

This one? Oh my god yes.

This one? Devourer of worlds.

To anyone posting comments, stop mentioning the blue ringed octopus. I interpreted “overpower” to mean physically overpower, not poison, thanks.
And yes, the last three are not real. The drawing is not a photograph. They are jokes. Cthulhu is not real, so he cannot really devour worlds.
The purple one is real, and is as cute as a button.