Duke Fishron

For strategies on how to defeat Duke Fishron, see Guide:Duke Fishron strategies.

Duke Fishron is a Hardmode boss that is summoned at the Ocean Biome. It is immune to the On Fire!, Poisoned, Cursed Inferno, and Frostburn debuffs. To summon this boss you first need to obtain a Truffle Worm. After obtaining it, go to the ocean and cast any Fishing Pole into the ocean using the Truffle Worm as bait. When you get a bite, reel it in, and Duke Fishron will spawn and attack you.

Duke Fishron, unlike the other hardmode bosses, doesn't have to have had another boss be fought to gain access to him (like Mechanical Bosses -> Plantera -> Golem for example), and it is not required to fight him to progress farther in the game. He is, however, currently the hardest boss in the game.

Duke Fishron looks like a fanged pig mixed with a large fish, with many fins and a fishtail. Despite being a non-required boss, he has 11000 more health than the "last boss in the process" so far, (Golem), meaning he currently has the most health out of all bosses in the game.

Behavior
Despite being a fish, he flies and goes through blocks like most bosses, so don't underestimate him. Once you see the message "Duke Fishron has awoken!" he will appear at your bobber's current position with a green light trail behind him and go straight for you. Duke Fishron has two phases. As said before, he is able to fly, so his main attack is similar to the Eye of Cthulhu or the Twins, charging at the player constantly. He will do this 5 times before switching to two different moves.

Phase One He will lunge at the player exactly five times before using one of his two other attacks. One of these attacks, the first, is blowing explosive bubbles from his mouth, roughly 20. These bubbles will follow the player around at a reasonable speed and deal damage and bursting upon touch. These bubbles can be destroyed with any kind of attack or projectile. After blowing his bubbles he will once again lunge at the player five times before doing another attack. His other possible attack is--referencing a commonly criticized movie--Sharknado. First off he will wave his fins once, then water-like blobs will fall to the ground, bypassing any platforms. Once these blobs touch the ground, they will form a tornado, which can damage the player. These tornados will spawn several fish which will charge at the player. These fish do not go up forever, as they will fall down once a "jump height" has been reached. At 25000 HP he will be stationary for a second, then he will become enraged and get glowing eyes, entering his next phase.

Phase Two At this point his power, speed and defense increase significantly (unconfirmed), and changes battle patterns as well. He will only do his now-faster lunge attack three times instead of five, but the speed of each lunge is increased and the time between them decreased. He no longer will blow bubbles from his mouth, but will fly a in a circle about three times, leaving a trail of the same bubbles from before. His sharknado attack is also upgraded, as that the blob (now only one) will now follow the player, creating a tornado when they touch the player. These blobs will not inflict any damage. However, they will spawn about twice as much fish as in the previous tornadoes.

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