Some characters have alternate voices that can be used in battle. At the character select screen, select the character by holding down an attack button for 1 second. Alternatively, open the color palette select screen by selecting the character using the options button and then press up or down. The character's name will change color and there will be an audio cue. This does not work in Story Mode, Tutorials, Trials, or Challenges where you cannot select your own character.

Effect	Code
Anime Peacock	Select Peacock by holding an attack button down for 1 second, or press up/down in the color palette select menu.
Nonpartisan Double	Select Double by holding an attack button down for 1 second, or press up/down in the color palette select menu.
Salty Parasoul	Select Parasoul by holding an attack button down for 1 second, or press up/down in the color palette select menu.
Saxploitation Big Band	Select Big Band by holding an attack button down for 1 second, or press up/down in the color palette select menu.
Valley Girl Painwheel	Select Painwheel by holding an attack button down for 1 second, or press up/down in the color palette select menu.