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The Power Meter is a feature used by Little Mac in Super Smash Bros. for Nintendo 3DS and Wii U and Super Smash Bros. Ultimate. When the meter fills up to the max, the player can unleash a K.O. Uppercut that deals 42% of damage and has extremely high upwards knockback. The meter can be filled either by dealing damage to opponents or by receiving damage from opponents. It, however, needs to be used soon, because if Little Mac gets launched or a bit of time passes, it resets.