2010: Shock Of The New Era

On January 23, 2010, Beast commenced their international promotions in Taiwan. The group was awarded with the Best Newcomer Award at the 19th Seoul Music Awards on February 3, 2010.

The group's second mini-album, Shock Of The New Era, was scheduled for release on March 2, 2010. The album was released a day early after being leaked on Youtube. Despite the leak, the album climbed the Korean music charts and quickly sold 20,000 copies. Reviews of the title track "Shock" described it has having both powerful vocals and an overall strong sound, with the live performances incorporating a complex VTach dance routine. On March 25, 2010, Beast presented a different image by singing an orchestra version of the sad ballad 'Despite Holding On' by Korean group Noel, and were subsequently recognized as a boy group with outstanding singing ability.

On March 25, 2010, Beast received their first number-one win on Mnet’s ‘M! Countdown’ with 'Shock'. On April 14th, 2010, the group released a self-made music video for their track 'Take Care of My Girlfriend (Say No)' as a gift to their fans. Beast performed at the 8thKorean Music Festival held at the Hollywood Bowl in Los Angeles, California on May 1, 2010. In the third episode of their MTV documentary ‘B2ST Almighty’, the group released a self made parody video to their single 'Mystery' as a response to fan demand. Popular Korean girl groups Kara and 4minute featured in the video along with the Beast members. A digital single version of their track ‘Easy’ was released on April 29, 2010 with the title ‘Easy (Sincere Ver.)’. The track used strings and piano as opposed to the hip-hop feel and electronic instruments of the original. Beast was featured in the teaser music video for "Who's Next" by label mates 4minute.

On the 22nd of May 2010, Beast performed for ‘2010 I love Korea Dream Concert’ alongside popular Korean artists such as Rain, Lee Hyori, Girls' Generation, 2PM, Super Junior, SS501, and f(x). From June 16 to June 20, 2010, Beast performed at the ‘Helping the Single Mom’ concert in the Philippines. The group then performed in Singapore and Malaysia from the 22nd to the 29th of June 2010 and held showcases in Japan from the 30th to the 5th of July.

Beast appeared as special guests in 'Precious Land, Dance Show' in Japan on the July 1st, 2010. After their first ever appearance in Singapore, the Shock of the New Era album sold over 100,000 copies and was certified into the Gold Disk category. Beast appeared at the 'Brand New Concert: The Burning Day' on August 20, 2010 with popular Korean music acts 2AM, Brown Eyed Girls, KARA and T-ara.Beast and 4minute became the first Korean artists to be invited to perform at the Singapore Youth Olympic pre-opening stage on August 13, 2010. Beast was awarded with the Cool Star Award on 2010 Mnet 20's Choice Awards on August 26, 2010. On August 26, 2010, American R&B musician Omarion made a surprise appearance as a guest onstage when Beast received their award on Mnet 20’s Choice Awards. Omarion had also performed a special showcase with Beast after seeing their performances.