Dark Hold

Dark Hold (ダークホールド) is a Special Weapon obtainable in Mega Man X5 by defeating Dark Dizzy. It is able to stop time for X and Zero's surroundings, and uses Weapon Energy until it is shut off. Because it is activated as soon as the Special Weapon button is pushed, it cannot be charged. To deactivate the Dark Hold, either simply go to the weapons screen and choose another Special Weapon or use a Giga Attack.

The Skiver is one of, if not, the only boss that is frozen by this weapon - all other bosses are immune to the Dark Hold's time-stopping abilities. 

Trivia

 * Upon activation, X and Zero's surroundings will invert colors.
 * This weapon is essentially the X series' version of Time Stopper from the Classic series. Not only does X have a similar color scheme to that of Mega Man when equipped with Dark Hold, but the way the Weapon Energy is gradually drained is also similar.
 * Unlike Time Stopper, however, Dark Hold can be deactivated at any time by going to the weapons screen to equip another weapon.
 * While generally in-effective against bosses, presumably due to interference by the Sigma Virus, The Skiver is affected as per his weakness.
 * This weapon is needed to successfully navigate through the latter half of the first Fortress Stage, which contains lethal laser beams reminiscent of Quick Man's stage from Mega Man 2. The player may need to use the Weapon Sub-Tank (as well as the weapon energy capsules picked up) if he/she takes too much time.
 * When used against the rematch with Dark Dizzy, it will only consume one unit, and the screen will only flash white for a split-second.
 * Zero uses this move as his level 3 hyper combo in Tatsunoko vs. Capcom: Ultimate All-Stars.