Hajime Taga is the synchronization partner of Roidmude 007 and a minor antagonist in Kamen Rider Drive.
Hajime Taga was arrested in the past by Akira Hayase after he killed a police officer. He was later freed by Roidmude 007, who used a Neo Viral Core to fuse with him to become the Sword Roidmude. As the Sword Roidmude he went after Hayase to get revenge but Drive and Mach again showed up to stop him. Drive separated Hajime from 007, allowing the criminal to be taken into custody again
However, Taga was freed by 007 again and fused with him to again form the Sword Roidmude. The Sword Roidmude then begins assault officers until Shinnosuke shows up. However, with his left arm having previously been broken, Shinnosuke was unable to even insert the Shift Speed Car into the Shift Brace. Deadheat Mach then appeared to fight Sword, only to be knocked out of his transformation after a brief fight. Kiriko attempted to fight Sword by kicking him but did nothing. Sword then sliced off Kiriko's Shift Car Holder and pushed her off the bridge.
Chase then showed up, beat down Sword and saved Kiriko. Transforming into Kamen Rider Chaser, Chase overpowered Sword and pulled Taga out of him, reverting 007 back to his Low Class state. After 007 was destroyed Taga was once again taken into custody.