Harry Potter World Cup: Sirius Vs. Tonks

Harry PotterWelcome to MTV's Harry Potter World Cup! We've selected 64 of the best "Harry Potter" characters and matched them up in a series of duels for a chance at magical glory, but it's up to YOU to decide who the greatest "Potter" character of all time is in this pool of wizards and witches. Will the Death Eaters destroy Hogwarts, or will good triumph over evil? In the end, the choice is yours, so keep voting at MTV Movies Blog and make your voice heard!

Sirius Black had no trouble defeating former Auror and onetime Minister for Magic Rufus Scrimgeour in the first round of the Harry Potter World Cup, but how will the Prisoner of Azkaban fare when facing his own kin on the playing field? We'll find out shortly, as Sirius and Tonks prepare for their duel in the Diagon Alley division's second round.

Voting for all second round match-ups will close on Friday, July 1 at 12:01 AM EST, which is only a few hours away — you're running out of time to vote, so get to those polls now! You can follow all of the duels right here.

(3) Sirius Black vs. (6) Nymphadora Tonks

Though this duel isn't quite as cruel as the ongoing battles between George and Ginny and Fred and Arthur, it's still difficult to watch cousins Sirius and Tonks contend with one another. Both are powerful magicians with strong spirits and good hearts, but only one of these two Dumbledore loyalists can advance to the Sweet 16 — and you can count on both of them to fight for that right with all of their might.

Having trouble deciding? Consult our Harry Potter World Cup experts from MuggleNet, The Leaky Cauldron, DanRadcliffe.com, RupertGrint.net and MTV News for their insight!