On October 14, 2010, Hyuna played a cameo role in the thriller movie Midnight FM along with fellow band member Jihyun.
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On March 7, Hyuna was announced to be a spokesmodel for Toyota Corolla.
The sub-unit was officially billed as 'JS & Hyuna', which Hyun-seung went on to reveal on his Twitter included his new stage name for the subunit, Jay Stomp.