Sympathy for Mr. Vengeance

Sympathy for Mr. Vengeance

Park Dong-jin

Ryu

Ryu's Sister

Yu-sun

Chief of Staff

Choe

Peng

Husband of Dong-jin's ex-wife's

Park Dong-jin's ex-wife

Anarchist

Delivery Boy

Retarded Boy at River

The bridge at the small lake was constructed by the film crew.

Ha-kyun Shin complained of being hurt by Kang-ho Song in the scene where he slaps his face recklessly. The filming crew noticed his face looked different from injuries.

When Ryu (Ha-kyun Shin) runs up and hits the organ seller over the head with the baseball bat, the filming crew was surprised as he was told to walk up behind and hit him, not sprint and strike.

When Ryu rides the elevator with the police with Cha Yeong-mi's dead body, the sheet used to cover the body gets "pulled" down instead of coming down on it's own.

In the ransom photo of Yoosun, she is wearing the necklace Ryu made. However, he hadn't given her the necklace when he took the photo, it was later, when he traded the necklace for her doll.

During the scene where engineer Peng slashes his stomach four times, notice his strokes. He makes a semi-short stroke, then two strokes that are similar in length, and then a very long stroke on the bottom. All of these strokes are relatively straight; although, when you see the close-up of his gashes bleeding, you see that the first stroke is very short and angled down, and the bottom stroke is much shorter than the middle two, even though it should obviously be longer.

Cha Yeong-mi: The bad image kidnappers get is because of kids getting killed. But we're different. Give us the money and we'll return the kid pronto.

Park Dong-jin: I know you're a good guy... but you know why I have to kill you...