Game:Zack

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Zack
Japanese	ザックス
Rōmaji	Zakkusu
Origin	Final Fantasy VII
Game	Kingdom Hearts Birth by Sleep
KHBBS tracks Battle theme - Shrouding Dark Cloud

Location		HP	EXP	Strength	Defense
Olympus Coliseum		600	0	16	9
Physical	Fire	Blizzard	Thunder	Dark	Other
x1.0	x1.0	x1.0	x1.0	x0.5	x1.0
Stun	Freeze	Mini	Blind	Ignite	Confuse
x1.0	x1.0	x0	x0	x1.0	x0
Bind	Poison	Slow	Stop	Sleep	Death
x0	x1.0	x0	x0	x0	x0
Zero Gravity		Magnet		Warp
x1.0		x0		x0
Rewards
None
World(s)
Olympus Coliseum

Zack
Japanese	ザックス
Rōmaji	Zakkusu
Origin	Final Fantasy VII
Game	Kingdom Hearts Birth by Sleep
KHBBS tracks Battle theme - Extreme Encounters Battle theme - Vim and Vigor

Location		HP	EXP	Strength	Defense
Olympus Coliseum		600	0	16	9
Physical	Fire	Blizzard	Thunder	Dark	Other
x1.0	x1.0	x1.0	x1.0	x0.5	x1.0
Stun	Freeze	Mini	Blind	Ignite	Confuse
x1.0	x1.0	x0	x0	x1.0	x0
Bind	Poison	Slow	Stop	Sleep	Death
x0	x1.0	x0	x0	x0	x0
Zero Gravity		Magnet		Warp
x1.0		x0		x0
Rewards
Deck Capacity +1
World(s)
Olympus Coliseum

Match		HP	EXP	Strength	Defense
A Time to Chill		• Round 4: Zack
		600	0	30	16
Physical	Fire	Blizzard	Thunder	Dark	Other
x1.0	x1.0	x1.0	x1.0	x0.5	x1.0
Stun	Freeze	Mini	Blind	Ignite	Confuse
x1.0	x1.0	x0	x0	x1.0	x0
Bind	Poison	Slow	Stop	Sleep	Death
x0	x1.0	x0	x0	x0	x0
Zero Gravity		Magnet		Warp
x1.0		x0		x0

Zack
Japanese	ザックス
Rōmaji	Zakkusu
Origin	Final Fantasy VII
Game	Kingdom Hearts Birth by Sleep
KHBBS tracks Battle theme - Shrouding Dark Cloud

Location		HP	EXP	Strength	Defense
Olympus Coliseum		600	0	16	9
Physical	Fire	Blizzard	Thunder	Dark	Other
x1.0	x1.0	x1.0	x1.0	x1.0	x1.0
Stun	Freeze	Mini	Blind	Ignite	Confuse
x1.0	x1.0	x0	x1.0	x1.0	x1.0
Bind	Poison	Slow	Stop	Sleep	Death
x1.0	x1.0	x1.0	x1.0	x1.0	x0
Zero Gravity		Magnet		Warp
x1.0		x0		x0
Rewards
Deck Capacity +1
World(s)
Olympus Coliseum

Zack is fought at Olympus Coliseum as a boss for both Terra and Aqua. Terra was tricked into fighting him the first time, thanks to Hades, and the Keyblade Wielder later battles Zack a second time to free him from the darkness and Hades's control. Zack then appears before Aqua in a friendly battle, serving as her final opponent in the Coliseum's tournament.

Strategy

Terra's scenario

First battle

Victorious in the games, Terra has been tricked by Hades into fighting Zack. He will have access to Command Styles, D-Links, and Shotlocks, however, proper execution of these abilities will extremely decrease the difficulty of the battle.

At the beginning of the battle, Terra and the helmeted Zack will stand some distance from one another, both having the option of closing the gap with a long ranged attack. Zack will most likely be first to close the gap, attempting to damage Terra with True Climhazzard, a leaping slash and slam combo. Slide can be used to avoid the attack, however, attacks such as Thunder Surge allowing the player to damage the boss while closing any gaps that form between him and Terra. Keeping in close range will decrease Zack's chances of using the jumping attack. If one remains far away from the boss, however, he will attempt to bombard Terra with Blade Beam. Careful timing of Slide can be used to avoid it.

In terms of damaging Zack, it is best to keep Terra's excellence in physical strength in mind. It is also best to keep Zack off his feet. Thus, attacks such as Blitz are recommended. One can also use long-ranged physical and magical attacks such as Fire, the combination of magic and physical attacks having a strong chance of activating the Critical Impact Command Style. The powerful physical attacks granted by Critical Impact can easily deplete Zack's HP, so long as one is careful enough to Slide out of the way of his attacks to prevent taking damage.

Zack should be, overall, a very easy opponent to beat. So long as one remembers Terra's preference of brute strength, uses all benefits of D-Links, Shotlocks, and Command Styles, and heals if needed, Zack should fall in due time.

Second battle

Zack, now under Hades's control, challenges Terra to a rematch. As within the first battle, Terra will have access to Command Styles, D-Links, and Shotlocks, proper execution of these abilities extremely decreasing the difficulty of the battle.

During the second battle against Zack, it is best that the player keep as far away from him as possible and remain in constant motion. A hit-and-run strategy is recommended, meaning attacks such as Thunder Surge and Fire should be favored. Zack will begin the battle by using Reverse Omnislash, a vicious combo of slashes; chains of Slides are needed to be used in order to avoid the vicious combo, or the use of a Shotlock, as being caught in the attack will spell defeat or at least leave Terra's HP very low in the Alarm Zone. Zack retains the use of True Climhazzard from the first battle. The same strategies can be used to avoid it, as well. Another new attack in Zack's arsenal is a devastating Meteor spell. This attack can easily be predicted, as his sword will always flash beforehand, and can easily be dodged with Slide. In terms of damaging Zack amidst all his dark and relentless attacks, one should wait until he pauses, struggling with the darkness that controls him. When this occurs, the player can then proceed to bombard Zack with physical attacks such as Critical Impact's combos or even Blitz. Once Zack recollects himself after being damaged or from his struggles, it is important that the player resume the hit-and-run strategy. So long as one heals if necessary and uses all special abilities granted, Zack should not be a challenge to defeat.

Remembering that the odds of surviving Reverse Omnislash are slim to none if it connects, and because it is very difficult to dodge, one way to avoid taking damage is to use a Shotlock command just as he begins his attack. The player will not take damage while using the Shotlock, and if Terra has full hit points, he should survive the barrage. Then, pummeling Zack to restore the Focus Gauge will ensure enough to keep using the Shotlock and survive. When Zack is done with this attack, heal and keep pummeling him; finish this battle as fast as possible, while paying attention for more Reverse Omnislashes.

If the player is a head-on attacker and does not use Shotlocks and D-Links all that often, it is still possible to take Zack out in this form. Firaga, Mine Shield and Mine Square can stun Zack when used well. The player would also do well to have at least two Curagas in his deck.

Once More is a very useful ability to have against Reverse Omnislash so that the player will be able to keep 1 HP before immediately curing himself. Another way of surviving these rapid slashes is by using Vanish: when Terra is invisible, Zack is likely to slash somewhere else and avoid Terra completely. This time can be used to heal and prepare the next command. Zack is also vulnerable to Zero Graviga if the player has it, so use that to either heal or press the attack.

Aqua's scenario

Zack facing off against Aqua.

Zack challenges Aqua to a friendly battle, now free of Hades's control. If one has already beaten Terra's scenario, then the player will recognize many of Zack's attacks and know how to avoid them. However, Aqua favors magic over brute force, so this needs to be taken into account when calculating the best strategy. Aqua lastly has access to Shotlocks, Command Styles, and D-Links. These abilities should be used to the fullest extent.

Zack will begin the battle by launching True Climhazzard, a jumping, downward thrust attack. Cartwheel to avoid it. The player keeping at a hit-and-run strategy, they should bombard Zack in-between his attacks with Triple Blizzaga, Aero, or Fire. Mine Square can also be used to trip Zack, thus opening him to damage, if he is in close range. Careful positioning of Aqua may even cause Zack to land on the mines after executing True Climhazzard. Through the use of Aqua's many magic attacks, the Command Style Spellweaver will eventually activate. Closing gaps between Aqua and Zack with Thunder Surge or another Surge attack, the player should then begin to hit Zack with the more powerful physical attacks granted by the Command Style. Filling the Command Gauge even further may possibly upgrade the Command Style activated to an even stronger one, such as Bladecharge. If Bladecharge is indeed activated, physical attacks should be favored until the combo finisher appears. So long as special attacks are used to the fullest potential, one heals if necessary, and one keeps at a hit-and-run strategy while remembering Aqua's preference to magic, then Zack should fall in due time.

Rematches at the Mirage Arena

A Time To Chill

Zack, alongside Hades, makes a final stand in the A Time To Chill round of the Mirage Arena, fought after several waves of Unversed have been defeated. The only obvious change in the boss is his greatly increased HP. In terms of attacking, the player should first target Zack as his attacks can do large damage. Overall, the fight should be easy if one has a strong Keyblade, be at a high level, and tailors their strategy according to each character's strengths and weaknesses.

As in the second battle against Terra, Once More is necessary for this fight, and Vanish is extremely helpful.

Technique		Element	Status	Power	Block?
Continuous Slash (連続斬り, Renzokukiri)		Physical	—	1.0+1.5+2.0	O
		Performs a vertical slash, horizontal slash, and jump slash.
Blade Beam (破晄撃, Hakōgeki, lit. "Break Clear Attack")	Sword	Physical	—	2.0	O
	Shock wave	Physical	—	1.5	△
		Raises sword and releases a shock wave that travels along the ground.
True Climhazzard (真クライムハザード, Shin Kuraimuhazādo)	Sword	Neutral	—	2.0	X
	Shock wave	Neutral	—	1.5	X
		Jumps while raising his sword, then dives diagonally and thrusts his sword into the ground, creating a shock wave around it.
		Resembles Hero's Entrance.
Reverse Omnislash (裏超究武神覇斬, Ura Chōkyū Bushinhazan, lit. "Reverse Super-ultimate Warrior God's Mastery Slash")	Fighting spirit (start)	Neutral	—	1.0 per hit	X
	Slash	Neutral	—	1.0 x11	X
	Upward slash	Neutral	—	1.5	X
	Downward thrust	Neutral	—	2.0	X
	Fighting spirit (final)	Neutral	—	1.5	X
		Releases fighting spirit, then performs 11 warp slashes, followed by an upward slash and a downward thrust, and finishes by releasing fighting spirit in all directions.
		Only used in the second battle in Terra's Scenario and in A Time To Chill. Zack will always start with this attack. Resembles Hero's Pride.
Meteor (メテオ, Meteo)	Meteors	Fire	—	2.5	△
	Explosion	Fire	—	1.5	△
		Drops 8 meteorites around the opponent.
		Only used in the second battle in Terra's Scenario and in A Time To Chill.
Guard/Block: △ = Can be blocked; O = Can be blocked and interrupted (melee) or deflected back (projectile); X = Cannot be blocked.

Videos

Zack I – Kingdom Hearts Birth by Sleep (Terra)	Zack II – Kingdom Hearts Birth by Sleep (Terra)	Zack – Kingdom Hearts Birth by Sleep (Aqua)