This is Goo Hara (or Koo Hara) from the girl group KARA. When I was first discovering KPOP and Kara (at the same time), I found YouTube clips of this funny girl named Goo Hara from different variety shows. After that, I was hooked.
When Goo Hara is Boxing (she doesn’t hold back!), Jumping up a slippery wall dressed as a giant stuffed animal, Bowling strikes, wrestling other idols with dominance, and most of all when she eats garlic to impress her mom, you can’t help but smile when she gives that funny mischievous smile after she does it.