Katsuya Takagi who had previously played Kazuya Misaki in Kamen Rider Amazons & recently Juran's Human form in Kikai Sentai Zenkaiger Spin-off has been announced to play the role of GUTS-Select's Captain. His character is called Seiya Tatsumi who is 38 years old.
As per Tsuburaya,
Captain of expert team GUTS-Select. The Captain is known for his ability to unite men, women, children, seniors – all beings on Earth and throughout the universe, as well as for his perfect balance of strictness and kindness. From the command center of the anti-monster battleship Nursedessei, he will brilliantly lead an elite crew with strong, diverse personalities, including Kengo, Yuna, Tesshin, and Himari.
The actor has also given comments for his appearance
I’m honored to be taking on the role of the GUTS-Select Captain Seiya Tatsumi. From the moment I was chosen to play the role, the excitement and pressure were so intense I could barely sleep for a full week – naturally because Ultraman has been my hero since I was a child. I couldn’t believe I was going to be a Captain! When I was young, the heroes and defense team members on the show filled me with courage, motivation, and the power to hope. Now, it’s our turn to shoulder that responsibility and create a bright future for children and adults alike. I’m all the more honored to be entrusted to play the role of Captain in the nonmemorable 55th anniversary of Ultraman and 25th anniversary of Ultraman Tiga. My hope is that Trigger will capture the hearts of this generation, just as Tiga did with mine. I will put my utmost into making Trigger a powerful work beloved by those of all generations. Please enjoy the show!