Also joining the show's cast in the fourth season are: Takashi Hagino (Kamen Rider Ryuki) as Tadasumi Akuta, Akira Yamashita, Yuuka Hiromichi, Kotaro Taki, Keisuke Igarashi, and Noriyasu Motoyama. In addition, Nao Oikawa (Engine Sentai Go-Onger), NJPW wrestler Ryusuke Taguchi, and a mysterious person with the initials "T.S." will make guest appearances in this season. But that's not all, there will be new antagonists, and they are: Hatena who is voiced by HOLOSTARS' Aragami Oga, and Yuzuyuzu who is voiced by hololive's Omaru Polka.
Lastly, the season's new opening theme is titled "Metropolis! Dogengers!" and is performed by Fuki, while the new ending theme is an updated version of Dogengers: High School's ending theme titled "We Love You! Dogengers (Metropolis ver.)" by Asuka Kozuka. Dogengers: Metropolis is set to premiere this April 9th on KBC in Fukuoka and on YouTube at 10am JST, and will now have longer episode runtime as the series upgraded from a 25-minute timeslot, to a 30-minute timeslot.
[Source: toku_gami]