Berserker Lord

Berserker Lord is a boss in Metroid Prime 3: Corruption. It is the first boss Samus Aran faces in the game. Later on Samus faces another on Elysia. They are very similar to the Omega Pirate and Dark Ingsmasher as they are a tougher version of a smaller, weaker, and more common variety.

A Berserker Lord is a Berserker Knight that has been corrupted with more Phazon than usual Knights can survive (Similar to the Omega Pirate compared to Elite Pirates).

When Samus battles it, she must first fire at two large, red circles on his shoulders. Once they are destroyed, he will fire projectiles at her which Samus must shoot at. This will cause them to fly back to Berserker Lord. Once a few of these projectiles have hit the creature, it will shoot a stream of a liquid-like substance, which is likely Phazon. The phazite plating on its head will then be destroyed, which Samus now must rapidly fire her Power Beam at while the Berserker Lord tries to pummel her with bunches and shockwaves. Eventually, he will stumble into an electrical fence and fall into space, being hit by a fighter ship. The fighter ship appears to be a Federation Stiletto Fighter, though it is only seen for a moment.

Later in the game on Elysia when you attempt to get the 1st Bomb Part another Berserker Lord appears. The Beserker Lord here is darker in colour and appears to have been damaged beforehand. Suggesting it could be the same one.

It is likely that the Berserker Lord and the lesser Berserker Knight are the results of continued Phazon research on Elite Pirates.

Other
Here is the Berserker Lord battle music: |http://www.youtube.com/watch?v=brKt4pvKPaQ.