Tid

Tid is a Super Time Jacker capable of transforming into the giant Another Rider Another Kuuga and the main antagonist of Kamen Rider Heisei Generations FOREVER. He seeks to become ruler of the world by erasing the history of the Heisei Kamen Riders, or the entire Kamen Rider franchise in general.

History
Desiring to become the ruler of the world by erasing the history of all Heisei Riders, Tid attempts to seal away Shingo, whose status as a Singularity Point would have prevented his plan. To help accomplish his goal, Tid brainwashed two humans into becoming Another Double and Another Den-O.

After he's defeated in his Another Rider form, Tid uses his Another Watch on Shingo to absorb him and become the more powerful Another Ultimate Kuuga. However, the 20 Heisei Kamen Riders combine their powers to defeat his final form, killing him and saving Shingo.