From Bulbapedia, the community-driven Pokémon encyclopedia.
The Power Styler is a weapon used by Gordor in Pokémon Ranger. It is an improved version of Professor Hastings' Super Styler.
Gordor's first usage of it is in an experiment inside the Jungle Relic, where he captures two Magmar and an Entei. This experiment ends in failure when his Pokémon are captured by the player, but he is satisfied with the test.
The final form of the Power Styler appears at Fiore Temple in the form of an electronic pipe organ. Using this device, Gordor not only recaptured Entei, but added Raikou and Suicune. After the player captures Raikou and Suicune, and while Gordor boasts he does not need them, the player's and counterpart character's Plusle and Minun jump up and down on the keyboard, overloading the Power Styler and causing it to explode. This releases Entei from its control and forces the player to capture it when it attacks Gordor.