Rob's villain list got me thinking. Who are the most badass anime sidekicks?
Zoro is my first nominee. Other than lacking a sense of direction the dude is just badass. His pride and honor as a swordsman make the character for me.
Yu Yu Hakusho Kurama and Hiei. Sorry but Kuwabara was there for comic relief. The series concludes Kurama, Hiei, and Yusuke each taking charge of one of the 3 demon armies. Both Kurama and Hiei were badass for their own reasons.
Honorable mentions go to (I can't find images very well with a firewall so you get honorable mentions)
Takahashi Keisuke (Initial D), Nara Shikararu (Naruto), Krillin (Dragonball), Takamura Maumaru (Hajime no Ippo), Hajime Saito (Rurouni Kenshin), Alphonse (FMA), and Fuji Shyuuske (Prince of Tennis).