The Cloaking Device (スパイクローク, Spy Cloak) is a transformation item in Super Smash Bros. Melee that makes the user invisible and invincible to raw damage.
True to its depiction in Perfect Dark, the Cloaking Device turns the user invisible. If playing with a name, the tag will also disappear, and any "props" that a character uses, such as Mario's Cape or Link's Hookshot will also become invisible (though any held items will remain visible). In addition, players are unable to take any damage if they are cloaked, and recoil damage is negated. Characters, however, will still take any hitstun or knockback inflicted on them.
While standing completely still will make the player completely invisible, movement of any sort disrupts the device's powers. While walking or jumping, the background behind the player will appear to "bend" in their shape, and faster movements, such as midair jumps or dashing, will cause the "bends" to become even more visible. While attacking, the player can even become temporarily visible for a brief moment. Regardless of movement, the effects of the cloaking device become more unreliable in the last second of its use.
The cloaking device's effects wear off after ten seconds.
As a Special Melee option
Within Melee's Special Melee mode, Invisible Melee forces all players to be under the effects of the Cloaking Device; contrary to its usual specifications, however, players still take damage in the mode. Like the item itself, names are also not displayed in the mode (aside from Melee)
While the item does not return for Brawl and Super Smash Bros. for Wii U, a "Clear" modifier is available in the revamped Special Brawl/Smash mode, acting identically to Invisible Melee. Boo, a Smash Tour item, allows the player to start a fight with similar effects to a Cloaking Device.
In Event Matches
Event 23: Slippy's Invention in Melee pits the player's character against Fox and Falco on Venom, both of whom are under the effects of a permanent Cloaking Device, albeit more similar in function to Invisible Melee. At the start of the match, Slippy Toad says, "How's the cloaking device I invented?"; as the description of the match also says "Slippy: With my new device, you guys'll be invisible!", the match implies that Slippy invented the Cloaking Device that is used in Melee.
Brawl itself features Co-Op Event 6: Unwanted Suitors, which acts similarly to Slippy's Invention. In the match, two players, as either Zelda or Zero Suit Samus, need to fight against Luigi and Captain Falcon, both of whom are under the effects of the "Clear" modifier.
Trophy in Melee
The Cloaking Device made its first appearance in Perfect Dark, acting as an item that used a refractive field to make its user invisble. While invaluable if the player wishes to use stealth, using any weapons while using the device causes the player to turn visible again. Contrary to its depiction in Melee, players who are damaged while cloaked will still take damage; in addition, the device's effects are permanent as long as the player does not fire a weapon.