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Super Mario series
Super Mario Bros. 3
In this game, Boss Bass swims on the surface of the water trying to leap out and eat Mario if he gets too close. It does not matter which form the player is in because Boss Bass will defeat Mario instantly in one gulp, even if he is a statue. In both of the stages he appears in, the water level rises and sinks, making Mario an easy target. Throwing blocks, shells, hammers, and fireballs at Boss Bass can defeat him, as well as tail attacks and using a Super Star, but he'll eventually come back. However, in Super Mario Advance 4, if the player has turned on the e-reader card that makes enemies hit by fireballs turn into coins, and the player successfully hits Boss Bass with a fireball and collects the coin, Boss Bass will not return for the rest of the level.
Super Mario 64 / Super Mario 64 DS
In Super Mario 64, Boss Bass (known here as Bubba) appear in two places on Tiny-Huge Island. Like Cheep Cheep, they have been redesigned with visible orange and yellow scales, and also wear sunglasses and have no tooth. They aim in on the player character with their mouth wide open, attempting to eat them. If a character is eaten, that character will lose a life, regardless of their current health. In Super Mario 64 DS, their design was reverted to their original one, serving the same role and appearing in the same locations. This time, the one closest to the course's entrance can be defeated with a nearby Super Mushroom.
In Mario Golf, either a Boss Bass in its Super Mario 64 design or a Cheep Cheep in its Yoshi's Story design will jump out of the water if the ball lands in it. Boss Bass are also much smaller in this game.
Mario Kart DS
Yoshi's Island DS
Boss Bass are also found in Yoshi's Island DS. They patrol their own little section of water, and periodically leap out in an attempt to swallow Yoshi whole. Yoshi will only be eaten while they are descending. There is also a mid-boss in World 3, Bessie Bass.
Mario Teaches Typing
During one of the underwater sections of Mario Teaches Typing, Boss Bass will swim towards the player. In this game they have a slightly different appearance: their mohawks, fins, and tails are cyan, and they have several sharp teeth instead of only one blunt tooth.
The Adventures of Super Mario Bros. 3
Boss Bass made appearances in The Adventures of Super Mario Bros. 3, where they usually chased after the good guys. Since they were never referred to by name, it is possible that they were intended to be Big Berthas, but they are not seen with Baby Cheeps.
Characteristics and traits
Boss Bass apparently eat Cheep Cheeps, despite being a relative of theirs. They also have trouble distinguishing them from something else, as proven in Super Paper Mario when a Shayde said that he fell into the ocean once, but luckily could swim as well as a Cheep Cheep. Unfortunately, a Boss Bass thought that since he swam like a Cheep Cheep, he was a Cheep Cheep so the huge fish ate him.
Names in other languages