Negataros

"You're all just amateurs. Hurry up and die already!"

- Negataros' words when he is about to battle Den-O

Kamen Rider Nega Den-O (仮面ライダーネガ電王) is the fictional villain of the Japanese 2008 Kamen Rider Series movie, Kamen Rider Den-O & Kiva: Climax Deka.

Negataros
Following the events of Kamen Rider Den-O, Negataros (ネガタロス) and a select few Imagin are stray Imagin who evaded the fate of the other evil Imagin when Kai ceased to exist in the final episode. Soon afterward, he steals an extra Rider Pass before arriving to restore the future where the Imagin exist by recruiting mobsters and members of the Fangire Race to his aid. In Climax Deka, Negataros has to deal with both the DenLiner Police (デンライナー署) led by Ryotaro Nogami, an inside man in the form of Yuto Sakurai, further worsened by the brief meddling of Wataru Kurenai.

In the end, Negataros' plan is foiled and his armor is destroyed by the Double Boistous Kick &amp; Darkness Moon Break of Kiva & Den-O Climax Form before he finally meets his end in battle against the DenLiner, the ZeroLiner and Castle Doran.

Negataros is also featured prominently in the S.I.C. Hero Saga (S.I.C.ヒーローサーガ) in Hyper Hobby Magazine. The story is a retelling of the events of Climax Deka featuring Negataros traveling to April 3, 1971, to team up with the Shocker organization and combating Den-O and the Tarōs along the way.

Personality and Abilities
A cocky and arrogant Imagin, Negataros shares a few similarities with Momotaros aside from looks and appearances. They are both quite confident of themselves and are quite eager for a fight. Unlike Momotaros though, Negataros is an evil Imagin who showed no desire to protect the timeline or innocent people but instead to destroy the current timeline while willing to murder countless of innocent people to do so.

Even though Negataros can only transform into one form which closely resembles Den-O`s Sword Form, his powers seemingly exceed all of Den-O's basic Form and possibly even Climax Form as well. This is hinted when he managed to survive being struck by a double Rider Kick from Kiva in Kivat Form and Den-O in Climax Form and instead of being defeated, only lost his Rider Form without (seemingly) being seriously injured.

Even when confronted by the DenLiner, ZeroLiner and Castle Doran, Negataros managed to somewhat hold his own with the Nega DenLiner until he was ultimately defeated proving how skilled he is at using it.

Forms
By swiping a Rider Pass across the SetTouch, Negataros is able to transform into Nega Den-O. Unlike Den-O though, because the user is an Imagin, Nega Den-O bypasses the Plat Form to assume his only fighting form (although a glimpse of Plat Form is briefly seen while transforming). Though he has no other fighting forms equivalent to Rod Form, Ax Form or Gun Form, Nega Den-O can use their equivalent Nega DenGasher weapon modes in battle.

Device

 * Nega Den-O Belt: Transformation belt
 * Rider Pass: A device to scan on the belt

Weapon

 * Nega DenGasher: Personal weapon

Vehicle

 * Nega Den-Liner: Nega Den-O's personal train
 * Nega Den-Bird: Nega Den-O's Rider Machine

Portrayal
Negataros is voiced by Hikaru Midorikawa (緑川 光). In both his Imagin form and as Kamen Rider Nega Den-O (Sword Form), his suit actor is Jirō Okamoto (岡元 次郎), who is also the suit actor for Kintaros/Den-O Ax Form.