f(x)'s Amber is the Supermarket Ninja?

f(x)'s charismatic rapper Amber is back on Twitter with a hilarious photo.

She tweeted on 1st November,"super market ninja! 마트닌자! happy halloween :)".

She transforms herself into a funny ninja and poses at the supermarket in the photo above.

Fans commented,"Amber is so funny","do you know martial arts?","Dorky" and etc.