Hayato Ichinose as Kou/Ryusoul Red aka the Brave Knight, this fearless young man is a combat genius with a curious and bright personality. While training to become a Ryusoulger under the eyes of Master Red, the Druidon attack and he is leaves home with his friends, Melt and Asuna.
Keito Tsuna (Bungaku Shojo) as Melt/Ryusoul Blue aka the Wise Knight is a young man with an endless thirst for knowledge, but falls short compared to his friends, Kou and Asuna. He has a photographic memory and never loses to an opponent. He takes new things slow, and is unsure on his feelings towards actual battle. He envies Kou's straightforward approach.
Ichika Osaki (Kamen Rider Zi-O) as Asuna/Ryusoul Pink aka the Robust Knight, grew up in a house of nobility. She is incredibly intuitive about things, which causes her to say things at the wrong time. The only female member of the team, she is the strongest Ryusoulger, but is shy about that fact.
Tatsuya Kishida (Lesson of the Evil) as Banba/Ryusoul Black aka the Majestic Knight, this man's combat skills has reached the "Master Level". He genuinely cares about protecting the Earth, but also fights the enemy Mynasaurs to prove his strength. He's unfriendly to all except for his brother, Towa/Ryusoul Green who cares for, but he never shows it.
- Mana Kinjo (Second Summer, Never See You Again) as Ui Tatsui, a girl who first encountered the Ryusoulgers
- Mitsuru Fukikoshi (Amachan) as Naohisa Tatsui, a paleontologist and Ui's dad
- Masaki Terasoma (Kamen Rider Den-O) as Tyramigo, Ryusoul Red's partner Kishiryu
- Jouji Nakata (Choujuu Sentai Liveman, Fate/stay night) as Tankjou, a Druidon Tribe general who commands an army of foot soldiers called Dorun Soldiers
- Ryoko Shiraishi (Hayate the Combat Butler, Sket Dance) as Creon, a Druidon Tribe general who has the poster to create monsters called Mynasaurs
Kishiryu Sentai Ryusoulger is set to premiere on March 17, 2019 at 9:30am only on TV-Asahi in Japan.
[Source: Natalie, SpecialForm12, TheRealMattHunt]