Who the most suitable become the antagonist in 'Perfect Fate'?

• Miss A Suzy (played as Jang Ma-Ri in BIG)
• Lee Eun (played as Hong Jung-Ah in Bachelor Vegetable Store)
• OC (you can suggest names : MUST BE A GIRL or I make it by myself)
• Other (just comment the idol, actress, ur name, etc name : MUST BE A GIRL)