The English cast includes Keith Silverstein as Casval Rem Deikun/Édouard Mass, Maggie O’Connor as Artesia Som Deikun/Sayla Mass and Chris Niosi as Garma Zabi.
The Japanese cast includes Megumi Han as Artesia Som Deikun/Sayla Mass, Shuuichi Ikeda as Casval Rem Deikun/Édouard Mass, Char Aznable and Tetsuya Kakihara as Garma Zabi.
Hulu brought out the Mobile Suit Gundam The Origin OVA series back in 2017 where it was available in both its original Japanese language form with English subtitles as well as the English language dub.
Originally released in 2015, the series was directed by Yoshikazu Yasuhiko and Takashi Imanshi based on the series composition by Katsuyuki Sumisawa.