A longtime friend of Helmut's and a former member of the Mach Storm team, Haldo is now a transport pilot who hauls goods in his Gustav. He still supports the team by offering them work, and has helped them out on several occasions. He provided Sigma with his Leostriker, and later helped smuggle the team out of the city after being imprisoned by Alpha. He has piloted several Gustavs in his lifetime and has the control stick of each of them in a display case.

(Source: Wikipedia)

R.D. is a delivery boy who works for a company called Mach Storm in order to earn money to search for the legendary Alpha Zoid. A Zoid that he heard rumours about from his dad that he passionately believes in. Mach Storm also doubles as a Zoid Battling team. In R.D.'s first Coliseum Zoid Battle, he encounters a team that can fuse Zoids. R.D. soon discovers that he has a Zoid that can computably fuse with his Zoid, Liger Zero. After this happens R.D.'s adventure to discover the truth about the Alpha Zoid begins.
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(Source: Anime News Network)


He's a voice actor affiliated with 81 Produce.

[Profile](http://www.81produce.co.jp/actor_search/index.php/item?id=8)