|This article is about a/an monster in Kaizoku Sentai Gokaiger.|
|"Took you too long to notice!"|
|―Vannain's first words[src]|
|―Vannain's final words before his death[src]|
|"I'll just use my ultra ninja art bluff too...."|
|―Vannain's final words before his initial demise[src]|
He is an Action Commander who can touch foreheads with another person or thing to assume that other's form. Used by Warz and his generals to put an end to the interference of the space pirates for good, he kidnapped Luka Millfy's old friend Cain and assumedhis form in order to trick the yellow pirate by bribing the Sugormin with Zagin. After luring Luka, he captured her and assumed her form to infiltrate the Gokai Galleon. Joining the Gokaigers during dinner, he later planted explosive charges across the ship while they were asleep. Later, Vannain detonated the charges, seemingly destroying the Gokai Galleon.
Little did Vannain know, the Gokaigers easily discovered that Vannin was an imposter, having observed him eating broccoli while in Luka's form, whereas the real Luka hated broccoli. After deactivating the bombs he planted, they had Fūraimaru use his illusion technique to stage their ship's explosion to deceive him and follow him to Luka just before the Action Commander could shoot her and Cain dead. After his Gormin, are dealt with. Vannain shifts into Gokai Yellow while fighting the real one, and then assumed Gokai Silver's form. The Gokaigers were confused as to which one was which, but Luka had an idea. The Gokaigers changed into the Megarangers, with the real Gokai Silver becoming MegaSilver, leaving Vannain exposed as the fake. He is then blasted by the GokaiGalleon Buster's Red Charge Rising Strike.
Grown by Insarn, Vannain tries to overwhelm GokaiOh and Goujyujin with sneak attacks as a building before being ousted for having a heat signature (something buildings don't have) and is crippled by GoZyuJin, then destroyed by Hurricane GokaiOh.
Super Hero Taisen
- Vannain was originally an alien with an organ that allowed him to shape-shift freely, blend into surroundings, and toy with opponents. Insarn enhanced him by giving him the Repli-Organ.
- He was in charge of "Operation Pirate Elimination via Gokai Yellow Masquerade" (ゴーカイイエロー成り済まし海賊排除作戦 Gōkaiierō Narisumashi Kaizoku Haijo Sakusen).
Vannain assumes Luka's form to trick the Gokaigers after his plan to capture her succeeds. It was exposed due to a fallacy in this form (He ate broccoli which the real Luka couldn't stand)
While fighting Luka's Gokaiger alter ego, Gokai Yellow, he briefly assumed this form as well.
Behind the Scenes
- He is voiced by Kōsuke Toriumi (鳥海 浩輔 Toriumi Kōsuke).
- He was designed by Yasushi Nirasawa.
- His design is a combination of a hammerhead shark and a manta ray.
- His name is a reference to Bannai Tarao, a fictional Japanese detective that could take on different faces.
- Vannain was not adapted for Power Rangers Super Megaforce.