Nega Taros

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

- His 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.

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.

Nega Form
"Nega Form!"

- Transformation announcement

Nega Form (ネガフォーム) is Nega Den-O's only fighting form. It is visually similar to Den-O Sword Form, but is a deep shade of purple as opposed to red and has teal tribal markings all over the armor. As with Den-O Sword Form, it is based on the story of Momotarō, the Peach Boy.
 * Rider height: 180cm
 * Rider weight: 95kg
 * Ability perimeters:
 * Punching power: 7t
 * Kicking power: 8t
 * Maximum jump height: 38m
 * Maximum running speed: 100m/4.8s

The armor met its end at the hands of Den-O Climax Form & Kiva's Double Rider Kick.

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

Rider Cards

 * Kamen Ride: Nega Den-O: A Rider Card containing the power of Kamen Rider Nega Den-O. Used by Diend to summon Kamen Rider Nega Den-O. This card is used by Diend in Kamen Rider Battle: Ganbaride.