Harlock Saga - The Ring of the Nibelungs(1999)

ハーロック・サーガ ニーベルングの指環 -ラインの黄金-

Harlock Saga is a six-part anime miniseries by Leiji Matsumoto. An adaptation of Das Rheingold, it tells the story of space pirate Captain Harlock and his crew as they try to stop a man who has stolen gold from the center of the galaxy and forged it into a powerful ring.