|This article is about a/an ranger in Shuriken Sentai Ninninger.|
Dark Doctor Mavro had created three evil clones of Hattori Hanzō, Fūma Kotarō and Sarutobi Sasuke. Having taken Takaharu Igasaki in his AkaNinger form, he fuses all three of his clones and Takaharu together to create the ultimate Dark Ninja, Dark AkaNinger. However, Dark AkaNinger's body rejects Takaharu's persona and it is separated from him. Having taken the AkaNinger powers in full, and with Takaharu in danger of disappearing for good, Dark AkaNinger then becomes Mavro's lead fighter. He is later defeated by the Ninningers with the help of the ToQgers.
The Dark AkaNinger Ranger Key (闇アカニンジャーレンジャーキー Yami Aka Ninjā Renjā Kī?) is a Ranger Key released as part of the Ranger Key Set: 2000th Edition. It is unknown if it will appear in a future crossover. Of course as with all Ranger Keys, should it exist, it would be able to transform one, i.e. one of the Gokaigers, into Dark AkaNinger.