Hundred Fists

Hundred Fists is a recurring ability in the Final Fantasy series usually associated with monks.

Final Fantasy XI
Hundred Fists is the monk special job ability in Final Fantasy XI. This ability is available, as with all special job abilities, at level 1. When activated, the Special Ability status will remain for 45 seconds. During this time, the Monk's attack delay will drop to next to nothing. This allows Monks to perform successive attacks almost non-stop for the period of this effect. This does not increase or decrease the Monk's Accuracy, but it does increase the number of attacks he can make drastically, thereby greatly boosting his damage potential. The increase in damage could draw unwanted enmity though since Monks are one of the highest damaging jobs in the game.

It is also used by Valor.

Final Fantasy XIII-2
Hundred Fists is a Feral Link performed by most flan-type monsters. It hits enemies within range multiple times.

Final Fantasy XIV
Hundred Fists is the capstone ability for Pugilists and Monks. While active, the Monks' auto-attack rate will be boosted (similar to its Final Fantasy XI incarnation). However, this ability cannot be combined with any other ability that affects auto-attacks, including the Monk's Spinning Heel.

Dissidia 012 Final Fantasy
Hundred Fists is one of Prishe's EX Mode abilities, allowing an increase in her movement speed and also allows her to chain up to three weapon skills in a combo, performing the follow-up attack twice and possibly resulting in two skillchains to highly increase her damage output.

Final Fantasy Trading Card Game
Hundred Fists is an ability usable by Maat's card for one Lightning CP and the discard of another Maat card. The player chooses an Active Forward and deals 8000 damage to it.

Trivia

 * This ability is based on the Hyakuretsu Ken – the trademark technique of the anime/manga series Hokuto no Ken and its protagonist, Kenshiro.