The latest magazine scan has confirmed that Kengo Ohkuchi will be joining the cast of Ressha Sentai ToQGers in upcoming episodes. Though it was initially reported that his name is Dark; he is actually the Emperor of Darkness, Zed.
Kengo Ohkuchi previously played Kazufumi Mizuno in Kamen Rider 555. He also played as Nobunaga in Kamen Rider × Kamen Rider OOO & W Featuring Skull: Movie War Core. Zed hails from the Dark World, with strong powers that even Baron Nero fears. According to the scan, Zed is attracted to bright things and aims to “Gather brightness!”.
Source: Tokusatsu Network