Big Octo

Big Octos, alternatively written as Bigoctos, are a giant-sized relative of Octoroks that seemingly cannot spit rocks themselves. Despite this, their massive size still makes them dangerous, and they can sometimes suck Link into their funnels to spit him out instead.

The Legend of Zelda: Ocarina of Time
In The Legend of Zelda: Ocarina of Time, a Bigocto appears as the miniboss inside Jabu-Jabu's belly. It appears after Link throws Princess Ruto onto a platform containing the Zora's Sapphire, with the platform rising to the room above and descending with the Bigocto on it. It then leaps off the platform and begins battling Link along the narrow path around it. In battle, the Bigocto will spin around before randomly going either clockwise or counterclockwise around the room, with the platforms spiked walls spinning in the center in the opposite direction. It moves too fast for Link to chase it down and bombs just cause it to jump, so he must throw his boomerang at it when it is moving towards him. Being hit with it stuns the creature and causes a growth on its behind to open, revealing a green weak spot. Link must quickly move around the room to attack it, causing it to leap away in pain and starting the process over. Depending on which way it moves, the player may have a chance to stun and attack it in quick succession immediately if done quickly. After enough damage is done, it spins around and plays the same death animation normal Octoroks use, and the platform descends for Link to use.

The Legend of Zelda: Majora's Mask
In The Legend of Zelda: Majora's Mask, Big Octos look the same as in Ocarina of Time, but act completely different. They now appear in the poisoned water of Southern Swamp, holding perfectly still to block specific passages. Two of them block the paths leading to and from the Deku Palace, and another blocks the path to the Deku Shrine. If Link moves too close to one, it surfaces and sucks him into its mouth, spitting him out and damaging him a few seconds later. They can be destroyed by the swamp's tour boat or a single arrow, and as such are more of a progress-based roadblock than a typical enemy. Due to its position, the one blocking the Deku Shrine can only be defeated by quickly shooting an arrow at it from a sinking lily pad, though nothing can be done in the shrine itself at that point. Once Odolwa is defeated and the water restored, the Big Octos disappear for the remainder of that three-day cycle.

The Legend of Zelda: The Wind Waker
In The Legend of Zelda: The Wind Waker, Big Octos are now massive, squidlike, and have many eyes that function as their weak points. Six Big Octos are dispersed across different sectors of the Great Sea, and act as sea-based minibosses. Their locations can be seen from afar by a large amount of seagulls flying overhead. When Link sails too close, it creates a giant whirlpool with itself in the center. The King of Red Lions will slowly be pulled in while circling it, and if it is not defeated in time, it will suck the boat and Link inside and launch them all the way to that section of the sea's edge.

Big Octos may have four, eight, or twelve eyes scattered across their bodies, which can be attacked with the boomerang, bombs from the cannon, or arrows. The eyes are normally yellow, but flash red when they are hit and turn black when destroyed. Depending on the number of eyes, the reward for defeating them also varies, with the sole four-eyed Big Octo holding a Great Fairy that boosts Link's Magic Meter, the three eight-eyed ones holding treasure chests with orange Rupees, and the two twelve-eyed ones holding treasure chests with Pieces of Heart. The Octo Chart tells of their locations as well as how many eyes each has. The four-eyed one is found near Two-Eye Reef, the eight-eyed ones are found near Fire Mountain, the Private Oasis, and Diamond Steppe Island, and the twelve-eyed ones are found near Tingle Island and the Seven-Star Isles.

Unlike most enemies, Big Octos never respawn. As such, they are one of the only entities whose figurine can be permanently missable in a single run of the game.

Hyrule Warriors Legends
In Hyrule Warriors Legends, Big Octos appear as obstacles in Adventure Mode, appearing on the Great Sea Map and Master Wind Waker Map. They can be destroyed with a boomerang item card. Doing so is optional, but their presence causes all successful attacks against the playable warrior to become "devastating," instantly reducing them to one quarter heart of health as well as ruining chances of getting an A-rank after a single hit.