Despite Invisible's Name, Invisible is clearly visible and it's appearance looks similar to that of Darkside. Invisible wields a unique shaped sword. They are mainly blue all over with yellow-tipped wings. It shares it's yellow glowing eyes with fellow heartless members.
The Invisible fires dark energy on occassions and more commonly uses its sword to attack Sora. It's main special attack is plunging their sword into the ground, while the main body turns into a ring of dark fire surrounding the closest person to the Invisible. This attack does dish out a lot of damage. The best way to avoid this attack is to jump or use Superglide.
 Journal Entries
 Kingdom Hearts
Heartless wielding a large sword. These winged Heartless can move freely through the air. Besides their sword, they attack with their tail and wings. With their high attack power, they often defeat their foes quickly.
 Kingdom Hearts: 358/2 Days
Both fast and strong, these Heartless pose a serious threat. They attack with a fearsome shockwave. Time your combo finisher so it connects right after they catch their sword. This will cancel the shockwave and leave them open.
 Kingdom Hearts Re: Coded
Powerful Heartless equipped with long, hefty swords. They can levitate and move swiftly through the air. Magic will slow them down, but be careful when you move in for the strike. Get too eager and Invisibles will counterattack—and boy, does it hurt when they do.