The official website for the previously announced Egao no Daika TV anime has announced additional cast members, who belong to Soleil Empire. The anime is slated for Winter 2019 via WOWOW, Tokyo MX, and Yomiuri TV.

Cast
Joshua Ingram: Yoshitsugu Matsuoka (Sword Art Online series)
Reira Étoile: Rina Satou (Toaru series)
Harold Mirror: Nobutoshi Canna (Little Busters! series)
Izana Langford: Ryotaro Okiayu (Keppeki Danshi! Aoyama-kun)
Yuni Vanquish: Makoto Koichi (Battle Spirits: Double Drive)
Rune Vanquish: Junya Enoki (Tsukumogami Kashimasu)

Source: Moca News

Update: November 21

The official website has announced cast members for Grantiga Empire, which another heroine Stella Shining belongs to.

Cast
Gale Owens: Takeshi Matsuyama Tennis no Ouji-sama series)
Lily Airheart: Yuki Nagaku (Hajimete no Gal)
Huey Malthus: Toshiki Masuda (Touken Ranbu: Hanamaru series)
Pearce Song: Haruki Ishiya (Akiba's Trip The Animation)
Brake Boier: Minoru Shiraishi (Nichijou)

Source: Moca News