Bergan

ド・ベルガン, General Oslack

The second general sent by Emperor Zambojil to keep an eye on Prince Heinel and kill him if necessary. He kept his identity concealed most of the time with a blank mask. Upon arrival, he created a combat beast with a special alloy called Maxingal, the same alloy used for his armor, which was supposedly impervious to Voltes V's weapons and sword.

Using this alloy, he intended to defeat Voltes V and take over Heinel's position, but lost and became Zuhl's replacement under Heinel. Since his arrival, all beast fighters constructed has Maxingal as standard armor but they're still no match when Voltes V upgraded its sword with the Chōdenji/Superelectromagnetic Ball. Along with Gururu, he betrayed Heinel and attempted to blew up Earth with a Magmite Bomb. During the battle to liberate Boazan, he died when the starship he and Gururu were on was destroyed by Voltes V.

(Source: Wikipedia)