HMs are TMs that serve a purpose out of battle, as well as being moves for in-battle use; however, with the exception of Generation V, in order to use an HM's purpose out of battle, a Gym Badge is required. In Generation VII, HMs are not used and HM06 does not exist. In other generations, HM06 is:
In X and Y, it's unobtainable, but it exists in the game's data. It shares its icon with Master Ball.
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