UPDATE: VOTING IN THIS POLL HAS BEEN CLOSED. Voting in the championship will begin again at 5 p.m. ET on Aug. 7.

It's time for the Billboard Fan Army Face-Off championship!

The last two fan armies remaining -- Thirty Seconds to Mars' Echelon and BIGBANG's VIPs -- will fight for the title of strongest fan army.

Check out the road to the championship, rounds 1, 2, 3 and 4, and click for the full bracket here. Vote below! Polls close on August 10.

Fan Army: The Echelon

Artist: Thirty Seconds to Mars

The band on their fans: "If it wasn't for the Echelon, we wouldn't have ever won a single award. I think that's the blessing of living in this digital age, is that people have a voice, and the Echelon Nation out there has made their voice heard again and again, and we're so proud that they're able to gather together, to organize themselves, to fight for a common cause and to make dreams a reality. It's pretty special."

Fan Army: The VIPs

Artist: BIGBANG

BIGBANG on their fans: "We are extremely thankful to all the fans... We would like to continue visiting various countries around the world and to meet every BIGBANG fan out there. In order to do that, we have to constantly evolve and challenge ourselves and grow as artists. We hope that all of you will support for us."