Though the "Pokémon" franchise is primarily intended for younger players, each Pokémon has various complex attributes such as natures, characteristic traits, Individual Values (IVs), and Effort Values (EVs). These, according to Game Freak Board Director Junichi Masuda, are intended for people "who enjoy battling and want to go more in depth". These individual statistics were also included because the basic concept of the franchise is to train one's Pokémon. Designer Takeshi Kawachimaru stated that IVs and EVs "help to make each Pokemon in the game individual", as it adds unique aspects to them. Each "Pokémon" game introduces a few "Legendary" and "Mythical" Pokémon that are powerful, rare, and hard to catch. "Pokémon Sun" and "Moon" introduced "Ultra Beasts", which are described as "beings from another dimension" that appeared in the Alola region and are similarly powerful and rare.