Overqwil's poisonous spikes will reflexively react even while Overqwil sleeps, stabbing any moving thing that approaches.
It's ferocious and has a short temper. The ends of its spikes are barbed, and they can't be easily removed once they've punctured something.
Its lancelike spikes and savage temperament have earned it the nickname “sea fiend. ” It slurps up poison to nourish itself.