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Mario & Luigi series
Mario & Luigi: Superstar Saga
Red Peppers boost attack power in Mario & Luigi: Superstar Saga, giving more power to Mario and Luigi's attacks. The status is indicated by a red burst with an arrow pointing up next to the Mario brother's HP.
Mario & Luigi: Partners in Time
Red Peppers appear again in Mario & Luigi: Partners in Time, although they affect both fighters currently active. POW-Up is indicated by an expanding red circle around the attacker. Certain enemies can also raise their own attack power by becoming enraged (usually due to low HP).
Mario & Luigi: Bowser's Inside Story
Paper Mario series
In Paper Mario, Watt's ability, Turbo Charge, can increase Mario's attack power by 1 for one to four turns. Also, some enemies can charge their power.
Paper Mario: The Thousand-Year Door
In Paper Mario: The Thousand-Year Door, several items and the Crystal Star power called Power Lift can raise attack power. The "Attack is boosted!" status is indicated by an angry face above Mario or his partner. Charging also boosts attack power for the next attack only; this is indicated by the affected character changing color repeatedly in a pulsing fashion. Enemies can have this status effect, also, by taking up a turn to charge.
Paper Mario: Sticker Star