The Sneak Army is an Emblem Heartless that is found in Kingdom Hearts Final Mix. It is a giant chameleon-like Heartless that is capable of turning invisible. While it does appear in the first Kingdom Hearts, it is simply called Stealth Sneak, and is only given a name and journal entry in Kingdom Hearts Final Mix.
The Sneak Army is a bipedal lizard resembling a chameleon. It has a dark steel blue body, with five short spikes along its back. It often stands hunched over, holding its arms out in front of it. Its entire upper body is covered in stripes of various shades of black and grey, reminiscent of camouflage clothing. Its hands and feet have four toes each, two in front and two in back, with black claws. Its prehensile tail is curled up behind it in a spiral. It has a mouth lined by short, pointed teeth, a pink tongue that can extend to surprising lengths, and large yellow and orange eyes with small black pupils. It also has a large, black horn on the tip of its snout. Its Heartless emblem is on its chest.
The Sneak Army shares the former part of its name with the latter part of the Stealth Sneak, emphasizing that both Heartless are of the same family. "Sneak" means "to hide", referencing its ability to become invisible, and "Army" references the camouflage pattern present on the Heartless.
Sora should apply the same strategy as he did for Stealth Sneak. However, it tends to switch places more frequently than its predecessor, so Sora should lock on to it. He is also recommended to use Aeroga to double the damage he deals to the enemy.
The Sneak Army shoots a ball of light from its hands, which can be evaded by simply jumping. It also fires white lasers from its eyes, though they do not have homing properties. Sora can either stay far away from it, or attack it directly at the center of the Sneak Army's head (not the sides, because he will receive damage). Thunder and Gravity magic can also be used effectively, as they are powerful and have a wide area of effect.
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