Peach's personality is generally sweet and well mannered. In most games, she is portrayed as selfless, perky and generous. Typically, she does not show an aggressive nature even when she is fighting (this is done by quick slaps, elegant high kicks, thrusts in the air, and other graceful fighting techniques, as seen in the Super Smash Bros. series) or confronting her enemies. This, however, varies slightly from game to game. One of Peach's most common traits during her playable appearances is her ability to temporarily float in the air with her large skirt, and later on, with her parasol.

This was first featured during Peach's first playable appearance in Super Mario Bros. 2. This ability has also appeared in Super Paper Mario and her playable appearances in the Super Smash Bros. series. However, in Super Princess Peach, she shows wild mood swings from joy, gloom, calm, and rage, each of which gives her a special ability. These changes in emotion are most likely attributed to the "strange powers" of Vibe Island mentioned in the game's booklet. In Super Princess Peach, she shows Bowser that she is capable of defending herself.

Although often kidnapped by him, Peach is willing to have Bowser team up with her and the Mario Bros. when a bigger evil threatens the Mushroom Kingdom. The Paper Marioseries reveals that she can sometimes show a more bratty behavior, which dissipates after a short time. Apart from Mario, who is her main love interest, she has occasionally shown a very friendly behavior towards Luigi.[citation needed]

Try to sound exactly like her from the Comic Dub