Kingdom Hearts II
A Sniper is a humanoid creature dressed in a primarily purple bodysuit. Its skin underneath is light grey. Only the Nobody's white chin and neck are visible, the rest of its body being covered by its suit and the purple cap it wears. It also wears a black eye patch over the cap in the same place as Xigbar's own eye patch. Its suit also seems to sport pointed shoulders, much like Xigbar's coat. Its arms bell outward near its elbows, making it look as if the Sniper is wearing gloves. A white Nobody logo is emblazoned on the right glove. There is a wide, light grey spike with a circular-cut taken out of its bottom on either of the Nobody's hips. Like all lesser Nobodies, Snipers have the ability to contort themselves. They are also often seen "standing" on empty space. All Snipers wield large crossbows reminiscent of Xigbar's Arrowguns, and can even shapeshift its body into a massive version of the crossbow.
The Sniper is based on the eponymous job class from Final Fantasy.
Kingdom Hearts II
Snipers move the same way their master, Xigbar, does. Rather than actually moving their limbs, they will teleport around the field and shoot at Sora. They will seemingly stand on nothing and ready their crossbows to attack. The reaction command, "Warp Snipe", allows Sora to teleport in the same way they do, hitting the projectile back at the Nobody. If successful, it will hit the Sniper, damaging them, and rendering them defenseless for a while. What must be considered when facing multiple Snipers is that while warp sniping, Sora is still somewhat open to other sniper shots.
If given enough time, then Snipers will charge their projectiles, similar to the way Xigbar does, and will produce a bigger projectile. Once fired there will be a short delay, enough time for Sora escape the trajectory of the shot. If caught, it will split into multiple shots and cause a significant amount of damage.
Kingdom Hearts III
While not especially dangerous on their own, Snipers can catch Sora off guard while fighting other enemies, as a result it's a good idea to prioritize getting rid of any Snipers first. Snipers have a tendency to warp around when Sora gets too close, so consider using magic to stagger them while closing the distance. The Sniper's attacks can be blocked and used against it, with blocking the light bullets causing the bullets to be sent back at the Sniper, and blocking the Strike attack resulting in the usage of Risk Dodge.
The Sniper's attacks have a delay before they are sent at the target, so listen for when the shots are about to fire before blocking or guarding to prevent getting hit from blocking too early.