R.D.

The main protagonist of the series. RD is a delivery boy who works for the company known as Mach Storm. He becomes the pilot of the Liger Zero. However, he still has yet to grow as a Zoid pilot. RD is determined to become better, and usually butts heads with his rival Blake, who pilots the Berserk Fury. After a close call while fighting Blake and his Buster Fury Zoid, he is saved by the Fire Phoenix and eventually discovers the ability to Fuse it with the Liger Zero to create the powerful Liger Zero Phoenix.

RD's personal goal is to find the legendary "Alpha Zoid", a Zoid that is more powerful then any other. It is the same Zoid that his father dedicated his life to finding. Even though his father, Harris, left him when he was very young, RD is determined to follow in his footsteps. RD matures considerably over the course of the series, turning from a brash and somewhat irresponsible young man into a skilled pilot and leader.
[Source: Wikipedia]