The Shadow

The Shadow is an uncommon Droid that is mostly exclusive to The Darkness. They are only spawned naturally during the fight against The Dark One, where the boss will periodically spawn The Shadows along with other Darkness Droids. However, they can also be discovered outside of The Darkness, via a rare outcome from a Mystery Button.

Appearance
Similarly to other Darkness droids, the Shadow has the typical Droid helmet, but the droid itself is fully black.

Behavior
Whilst having the same attack pattern as most Droids (walk towards you), they have an insanely far sight range, high damage and are invincible. However, they are very slow, and do not need to be killed to clear the room.

While The Shadows summoned by The Dark One immediately die when their summoner is successfully vanquished, any Shadows found outside of The Darkness will follow the players into future Worlds.

Trivia

 * The Shadow is the slowest droid in the game, not counting droids that do not walk.
 * The Shadow and the Anti Droid are the only droids that cannot be hurt by the player.
 * Interestingly enough, they used to be able to get the Radioactive modifier from Reactor Droids, but this was patched in Beta 1.4.