Xigbar is a boss in Kingdom Hearts II at The World That Never Was, in Kingdom Hearts 358/2 Days at Olympus Coliseum, and in Kingdom Hearts III as one of the bosses of the Keyblade Graveyard, fought alongside Dark Riku.
Kingdom Hearts II
Xigbar begins the battle by warping to a ledge overlooking the arena Sora is on, and an HUD display appears. Xigbar fires combos of laser arrows at Sora just after the circles and rotating dots on the HUD align. Use the Reaction Command "Warp Snipe" to deflect Xigbar's shots. Once Sora has deflected three shots in a row, Xigbar teleports back to the ground. He may repeat this attack at least once more in the battle.
For most of the battle, Xigbar rapidly teleports around the arena, firing combos of laser arrows at Sora. These arrows can be dodged, or reflected back at Xigbar with Guard for minor damage. After approximately three combos, Xigbar temporarily stops attacking to reload his Arrowguns. At this time, Sora can easily strike him with a combo. Xigbar hovers upside-down throughout the battle, so Sora must jump to reach him. To grant Sora maximum mobility in this fight, make use of abilities that grant aerial combos. Leveling up Master Form to acquire the Aerial Dodge ability not only allows Sora to deflect Xigbar's bullets back at him with proper timing, but also gives Sora more time to strike Xigbar with aerial combos.
Throughout the battle, Xigbar frequently shifts the shape of the arena. In one shift, Xigbar narrows the arena, firing at Sora rapidly from the opposite end. In the second, Xigbar converts the arena into a narrow box-shaped path, with a single platform extending into the middle of the arena, over which Xigbar hovers. In the third, Xigbar creates a box-shaped arena with an intersection of platforms meeting in the middle. Xigbar combos to bombards Sora with laser arrows; Sora must strike him with a finishing move to shift the arena back.
Later in the fight, Xigbar charges large, blue laser arrows, several of which ricochet around the arena. These arrows bounce in addition to Xigbar's normal Arrowgun attacks and teleportation. Sora can use the Reaction Command "Warp Snipe" to deflect up to three of these blue arrows at Xigbar to damage him. Xigbar also begins firing multiple shots in quick succession.
When low on HP, Xigbar adds a new attack to his repertoire. He shifts the arena again into a small, square platform, and fires a barrage of laser arrows while rotating in a circle. He then teleports into the space around the platform to unleash several more attacks. Finally, he teleports into the air above the platform and fires countless laser arrows above him. This can be avoided by jumping to the far left corner of the platform, then running counter-clockwise, behind Xigbar's shots. The final phase of this attack can be avoided fairly easily, as Sora's movement speed is just fast enough to outrun Xigbar's shots. This is easily Xigbar's most dangerous attack, capable of stunning Sora until the attack is over, rendering him unable to heal while stunned. Alternately, Limits can be used to avoid it.
Xigbar's normal attacks can be blocked with Guard, Reflect or Warp Snipe. Due to Xigbar's constantly teleporting and shifting the face of the arena, getting close enough to do damage can be difficult. Make good use of Sora's various abilities to stay mobile while evading or deflecting Xigbar's long-range attacks.
In the data rematch, Xigbar begins by transforming the stage. Xigbar no longer needs to reload his weapons, so the only way to approach him is to deflect his shots back at him using Guard or Reflect, which stuns him for a brief period. His shots now move much faster as well. When he leaves the area to snipe, he can now shoot rapid-fire at Sora before the "Warp Snipe" Reaction Command is available. His charged blue shot now takes almost no time to charge and becomes far too quick to reliably use the Reaction Command, so it is better to cast Reflect before it hits to dissipate it.
Kingdom Hearts 358/2 Days
Xigbar challenges Roxas as the other finalist in the Olympus Coliseum's games. This battle is not a fight to the finish, but immediately ends once Xigbar's health is lowered enough.
Xigbar occasionally leaps back and fires two shots at Roxas from the air. Xigbar only performs this attack twice in a row. If Roxas travels out of his range, he teleports to a nearby location. Xigbar can only fire sixteen shots before running out of ammo; so exploit the chance to get closer to deal some damage while Xigbar stops to Reload. Dodge Roll, and Glide allows Roxas to dodge his shots while staying mobile. The bullets can also be blocked.
Kingdom Hearts III
Xigbar serves as one of the bosses of the Keyblade Graveyard, fought alongside Dark Riku against Sora and Riku. The battle against him is highly reminiscent of the boss fight in Kingdom Hearts II. It is recommended to defeat Xigbar first as his long-ranged attacks make fighting Dark Riku difficult. Xigbar mainly hovers upside-down in midair, out of reach from Sora and Riku, and attacks by firing homing arrows from his guns and firing a spread shot of arrows after charging up energy. Any arrows that don't hit Sora will linger on the ground, acting as mines that will explode and damage Sora if he makes contact with him.
After performing several attacks in a row, Xigbar will stop to reload his arrowguns, leaving him vulnerable to attack. All of Xigbar's attacks can be easily avoided, or more preferably, reflected back at him with Guard to deal damage. The Countershield and Frying Pan formchanges are essential in this regard as Xigbar's shots can be used to gather energy for their respective Wrathful Flurry and Flame Barrage reprisals. For players who wish to fight at a distance, the Double Arrowguns, Magic Launcher, Hunny Blasters, and Hunny Launcher Formchanges are ideal choices (though the Hunny Blasters and Hunny Launcher are better options as Guardian Form's Barrier ability makes it easier to reflect Xigbar's shots). The airstep maneuver is also a great way to close the distance between Sora and Xigbar while avoiding his attacks.
After enough damage, Xigbar will begin glowing with dark energy and use his Arrow Rain attack. The Freeshooter will teleport to the center of the room and combine his arrowguns into a large bow. He will then fire an energy arrow into the air, opening a spatial rift that rains down countless arrows of dark energy which will slowly expand outward to the edge of the room. Despite the attack's wide reach, it can easily be avoided with either a well-timed Dodge Roll, airstepping towards Xigbar, or by guarding against the arrows. So long as Sora reflects Xigbar's shots, makes good use of the airstep maneuver, and routinely heals himself and Riku, Xigbar will fall with ease.
Kingdom Hearts III Re Mind
As with the rest of the real Organization, Xigbar's data is significantly harder and stronger. Aside from his attacks from the base game, he now has several more tricks up his sleeve.
Note that several of Xigbar's attacks can be done standing upright or standing upside-down in the air, but whichever he picks does not change the behavior of his attacks. Focus on the movements of his guns and shots, and try not to be thrown off if he's unexpectedly upside-down/upright.
Xigbar will start the battle by changing the arena to a donut-like shape, with a rift in the middle. Sora cannot Airstep across this rift, so approaching Xigbar will require moving around it instead. He will perform various moves, listed below. It is easiest to think of this move as having four sets.
It is safest to play defensively during most of the donut phase, however it is possible to approach and attack Xigbar at the end of his second set. Block the first set, then dodge out of guard and start running as he does the running shots. Block these, dodge out of guard, run and wait a moment for his gun to glow purple, then Doubleflight to get above the mines. Glide toward Xigbar, block the four fast shots and four slow upward shots, then immediately Airstep as he prepares to fire the feint shot, and attack.
Sometimes later in the fight, Xigbar may restart the donut phase with the same patterns. If this happens, handle the moves the same as the first time around.
Once the stage is back to normal, Xigbar will use different combos.
When Xigbar does a flip sideways and shoots, he will follow with four slow shots upward and four fast shots directly at Sora. He will then summon two small portals and put his hands through them to fire. Block each set, though be careful not to block the slow shots too early. When Xigbar uses the portals, block at least two of the portal shots and Airstep to him after the fourth is blocked for a chance to attack.
When Xigbar teleports to the edge of the stage, spins his guns, and then fires them together with a blue glow, he will be using his ricochet shot again. He will follow with a side flip and shoot, summon small portals and shoot three sets of shots, then run sideways upside-down with additional shots, and finally finish with some shots while standing still. There are three ways to handle this:
When Xigbar appears slowly walking with his guns hanging loosely from his hands, he is taunting Sora and should not be approached. He will fire one set of small-portal shots, walk slowly again, fire another set of portal shots, then teleport, fire two sets of direct shots at Sora, then finally run and shoot. He is open after finishing his running shots. Block the shots and then reprisal or Airstep after the running shots to attack.
When one of Xigbar's guns glows purple while the other slowly rotate-ticks like a clock hand, he will fire his mines. Again, for a visual cue watch the rotating gun until it reaches a 5:00 position, then block. Xigbar will follow up with four slow shots upward and four fast shots directly at Sora. Wait until slightly after he fires upward, then guard to block both the mines and the shots. It is also possible to destroy the mines before they reach Sora, by using Fire when Xigbar prepares to shoot.
When Xigbar goes to the center of the arena, combines his guns into a bow, and fires skyward, he is doing his Arrow Rain attack. Purple arrows will rain down from above in a slowly-expanding circle, centered on Xigbar's inital position. He will follow up by firing mines, then four slow shots upward, then four fast shots directly at Sora. Guard the initial mine shot at 5:00, then block the moving mines after he's done firing upward to block the whole set. He will teleport and fire four more slow shots upward, then side-flip shoot just as the purple arrows approach the edge of the stage. Block the side-flip shots, and Sora should be able to block both the arrows and the slow shots right afterwards. Xigbar will follow with a side flip and shooting, then teleport away and fire some small portal shots. Block the side flip shots and at least two portal shots, then prepare to Airstep to attack after the fourth portal shot is blocked.
Blocking enough of Xigbar's normal shots will eventually prompt the "Showdown" Situation Command, which causes Xigbar and Sora to engage in a standoff akin to Wild West films. When Xigbar moves, Sora has to quickly retaliate with Quick Shot. Using this command at the right time will have Sora fire a shot that stuns Xigbar for a substantial amount of damage; otherwise, using it too early or too late will have Xigbar shoot Sora for massive damage. For a good visual indicator, look at Xigbar's head and attack when it moves.
If Xigbar's revenge value is hit, then he will teleport away and immediately start his next move. This sounds harmless, but can be dangerous depending on the attack he chooses. Try to either avoid hitting Xigbar's revenge value, or be prepared for the next attack.
After about seven bars of HP have been depleted, Xigbar will start his ultimate attack. He will transform the arena into a small circle and fire a barrage of blue shots, all of which cannot be blocked.
After using his ultimate attack, Xigbar will be in his second phase, and will have two new moves:
At about three or fewer HP bars remaining, Xigbar will transform the stage back into the donut shape, and perform a variation of his opening moves. He will start with the third set (the ricochet shot), then the fourth set (the arrow rain), then the first set (the feint), and finally the second set (the mines). These moves can be dealt with the same way as in the opener, however the purple arrows can actually reach Sora this time, so block when they get close. After the last set finishes, the stage will return to normal once more.
For PRO Code players, try to limit magic uses to Thunder, rather than Fire or Blizzard. Fire or Blizzard will swirl around and may hit Xigbar during the slow walking move, provoking him to attack. Thunder ends quickly enough for it not to face this issue.
Notes and references