Dople

Doples mirror Isaac's movements exactly. They attack by firing projectiles but only when Isaac fires tears, and these shots are fired at the same frequency as Isaac's tears. Contents • 1 Variations • 1.1 Evil Twin • 1.2 Notes • 2 Notes • 3 Trivia • 4 Bugs

• Doples often appear in rooms that have hazards, such as Spikes. It is possible to kill a Dople by maneuvering Isaac in such a way that the Dople walks onto a hazard, though these spots are often blocked by obstacles such as rocks, key blocks, or Hosts.
• Doples and Evil Twins do not deal contact damage, allowing Isaac to utilize contact items like Mom's Heels against them without risk.
• If Isaac attacks with an item that replaces regular tears with a charged attack such as Brimstone, Doples and Evil Twins will only attack when the beam first starts to charge up.
• If Isaac is blindfolded, Doples and Evil Twins will not attack.
• If Isaac has low tear delay, the Dople (but not the Evil Twin) will fire very rapidly at the same rate as Isaac, making it very dangerous.
• The Dople, despite mirroring Isaac's movements exactly, do not mimic his range. As a result, they can be significantly easier if Isaac has a higher range and attacks from as much of a distance as possible.
• If you are to charm a Dople/Evil Twin in a room with other enemies, the Dople/Evil Twin will try to copy the movement of every other enemy in the room, resulting in teleportation all around the room at very high speeds.
• When playing with multiple characters, such as Jacob and Esau or when using Soul of the Forgotten, Doples/Evil Twins will mimic only one of them. Multiple Doples/Evil Twins will mimic different characters.
• If a temporary character dies, their Dople/Evil Twin will also die.

• Evil Twins appear to have The Inner Eye ability, given the fact that it has a spread of 3 shots and a slower fire rate compared to Doples.
• Doples and Evil Twins are based on the term doppelganger, which means a double of a living person.
• Doples are a reference to Doppelgängers from the game Tomb Raider. It's a replica of Lara Croft, the protagonist of the video game, and can be found in The Great Pyramid. It's a skinless creature that would mirror the player's movements and could be tricked into jumping into a pit of molten lava.