The Carp King is a water-attribute Pokémon in the "Pokémon" series, and the evolved Tyrannosaurus Rex is a dual water/flying attribute Pokémon. In the game, players can level up the King Carp by letting it gain experience or using candies, and when it reaches level 20, it can evolve into a Tyrannosaurus Rex. After evolution, the racial value of the Tyrannosaurus Rex will be greatly increased, and can better adapt to the challenges in the game.