Bubble Pop is the wrong song to characterize Hyunah. Hyundah's public image is that of a natural-born temptress, someone who were tempting men since the 6th grade(Imagine poor Hyunah's idol manager being tempted by a sixth grader in elementary school, sweating through the encounters) and someone who destroyed the career of a fellow male idol singer through her temptation at the tender age of 15. In the end she survived the scandal, the dude didn't.
There is a reason why PSY asked Hyunah to feat for "Oppa Gangnam Style", since the song is about sluts at clubs and who better embodies the image of a club slut than Hyunah.