Negatron

Negatron is a fel reaver who often comes to visit Area 52 to destroy its machines. He doesn't "do" anything other than a minor scripted scene. He also attacks Area 52 when you start the quest You, Robot (quest), which involves testing the Scrap Reaver X6000.

Quotes

 * Despawn: HAHAHA! YOUR FEEBLE ROCKET IS DESTROYED! I'LL RETURN LATER TO FINISH OFF THE REST OF YOUR PUNY TOWN!

Trivia

 * His name is inspired by Megatron, the main villain of the original "Transformers" series.