K-Pop fans are mobilizing to bring the most votes for their favorite group in Billboard's Fan Army Face Off.

Billboard has arranged a voting competition to determine which fan army from 64 musical acts -including 16 K-Pop groups will be is the "strongest" - after six rounds until August 12.

"Which army is the strongest? Vote for yours and help carry them to victory!" said Billboard in the official Fan Army Face Off website.

In the K-Pop category, 16 popular were chosen and arranged to face off in a knockout format.

The first round, which ends on July 15, pits the following groups against each other.

- Big Bang #VIPs vs. B1A4 #Bana
- 2PM #Hottest vs. Infinite #Inspirit
- 2NE1 #Blackjacks vs. BTS #Army
- TVXQ #Cassiopeia vs. BEAST #B2uty
- CNBLUE #Boice vs. T-ara #Queens
- EXO #EXO-L vs. Girl's Day #DAI5Y
- FT Island #Primadonna vs. GOT7 #IGOT7
- Girls' Genertaion #Sones vs. SISTAR #Star1

Whoever wins in the K-Pop category will meet the winner from the Pop category, which includes the likes of Katy Perry and Bruno Mars, in the semi-finals round.

The finals will become a grand battle between the K-Pop vs. Pop winner, as well as R&B/Hip Hop vs. Rock winner.

Which fan army do you belong to? Who do you think will emerge as the K-Pop category winner?

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Mickey is a writer and digital content creator based in Manila. He is a co-founder of ZAVI App and editor of the small business blog IndieMickey. He has also been bitten by the K-pop fashion bug - follow him on Instagram @mickjami.