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Boctopus is a boss in Densetsu no Starfy. He is an octopus that often wears a pirate hat, but when he's not wearing it, his head appears to be that of an octopus dumpling. He captured Dolfy's siblings, Dolchina and Dolshi in Sunken Ship.
His battle consists of dodging Boctopus's canon balls he shoots out of his mouth. If one of this canon balls hit Starfy, they will cause Starfy to move slower, and Boctopus will chase Starfy in an attempt to deal damage. However, if the player is far away or runs away to try to evade Boctopus, the canon ball effect will eventually run out, making Boctopus lose his opportunity to deal damage. There are two ways Boctopus can shoot canon balls: he can blast them horizontally, straight towarda Starfy, or he can shoot them upwards, such as to make them fall from the air and land on random patterns. Once Boctopus has shot a certain amount of bullets, he will jump, giving Starfy a chance to attack his vunerable underneath. However, the player must then move fast, for Boctopus also has the ability to smash his sharp tentacles into the ground, in an attempt to crush Starfy before he can get out of the way.
Trivia
Boctopus, like many old men in the series, uses the pronoun Washi in Japanese.
However, unlike the many old characters that use it, he does not have the honorific Jii (じい) or Jiisan じいさん) in his name.
Boctopus shares these similarities with Blantern and Ogura, who are the only other bosses in the game to use Washi.
Boctopus also appears in the Densetsu no Starfy manga illustrated by Yumiko Sudō. He is one of the monsters that was released from the jar. Despite this, Starfy never fights him or even meets him. The only time he appears entirely is in volume 1. After Starfy and Old Man Lobber leave the human world, Boctopus appears and lands on Takeo, causing his Game Boy Advance to break for the second time.
Boss: Boctopus 
The Legendary Starfy series bosses
