A person that believes its his or her manifest destiny to eradicate anything that rotates (generates RPMs) from his or her entire sphere of influence. Generally, focuses on burning CDs to MP3s illegally as a starting point. Recognized by a tendancy to post long lists of his or her titles in his or her music library thinking others will be impressed.
Also see "pirate"
"When Loopy finds out how many MP3s that RPM_Warrior has made, he's gonna flip!"