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*The biker caught on video smashing an SUV window with his helmet after a wild chase in upper Manhattan gave the middle finger to reporters in court Sunday. [Scroll down to watch CNN report.]

Reginald (Reggie) Chance, 37, was in Manhattan Criminal Court facing assault and gang assault charges in the brutal beating of Alexian Lien when he flipped off reporters with both middle fingers moments before he appeared in front of a judge.

Chance is the rider wearing a black leather jacket in the viral video of the Sept. 29 chase, who violently smashes the driver’s window with his helmet, the criminal complaint alleges.

Lien was pulled out of his Range Rover in Washington Heights and beaten by five to six bikers after he plowed over a Massachusetts motorcyclist while trying to flee from an initial confrontation with the horde on the West Side Highway.

Edwin Mieses, a biker who was run over by an SUV driven by Alexian Lien during an altercation with several motorcyclists, is recovering at St Luke's-Roosevelt Hospital

Edwin Mieses, a biker who was run over by an SUV driven by Alexian Lien during an altercation with several motorcyclists, is recovering at St Luke’s-Roosevelt Hospital

Prosecutors said that after Edwin Mieses Jr. was run over, motorcyclists sped ahead to prevent the SUV from escaping. Once they trapped the vehicle, the thugs even tried to grab Lien’s wife, who was inside with the couple’s 2-year-old, a witness who’s being hailed as a good Samaritan said Sunday.

“We saw one of them opening the door of the passenger’s side and trying to force the lady out of the car,” said Sergio Consuegra, 52, who jumped between the dad and the bikers. Consuegra said he was on his way to church when he saw the riders start bashing the car at W. 178th St. and St. Nicholas Ave. and trying to pull Roselyn Ng out.

Alexian Lien and Rosalyn Ng

Alexian Lien and Rosalyn Ng

“She was kind of making some sounds,” he said. “I saw a baby inside; she had the baby in her arms, I guess she was protecting the baby from all the glass that was flying inside and outside.”

The mob backed off after bystanders started screaming for the woman and baby to be left alone, he said.

The father of 10 said he doesn’t consider himself a hero. “I wish I could have done more,” Consuegra said. “I must say today, to send a message to others, that whenever they see a family in crisis, no matter what the circumstances … be there for them. ”

Biker Robert Sims is arraigned at Manhattan Criminal Court on Saturday. He allegedly stomped on Lien’s head and body during the attack on Alexian Lien.

Biker Robert Sims is arraigned at Manhattan Criminal Court on Saturday. He allegedly stomped on Lien’s head and body during the attack on Alexian Lien.

Chance’s attorney, Gregory Watts, said his client didn’t assault anyone and chased Ng to identify who had struck the motorcyclist.

Police also released a photograph of a new unnamed suspect Sunday night. The biker had a flag sticker of “Guyana” on the rear of the motorcycle, cops said.

Christopher Cruz, 28, who police say sparked the chaotic confrontation by cutting off Lien’s Range Rover and stopping short, was charged last week in the assault and is out on bail. He was also driving without a license.

A third biker, Robert Sims, 35, of Brooklyn, surrendered Friday and has been arraigned on charges including gang assault.