Bankirosu is a vile, spiked Sea Dragon.
His origin is unknown, but he say's that he was born in the southern seas.
He like's to cause pain to large sea creatures, for example: Sperm Whales, by rolling up into a spikey ball and ripping up their intestinal tissues.
Thankfully, Doctor Starfy is here to prescribe a dose of heroism!
Bankirosu was last seen in Gigaton Trench.