Arlo Willner, the 20-year-old son of a well-known late-night TV figure, arrived in a Manhattan court with a visible bruise on Thursday to address charges of attempted murder stemming from a recent bar fight.

Accompanied by his mother Sheila Rogers, a television producer known for her work on shows like David Letterman and James Corden, Willner appeared in a dark suit and tie with disheveled hair and a black eye on his right side.

He stayed mum during the brief proceedings, where prosecutors revealed they would be presenting the case to a grand jury on June 10.

Prosecutors claim that Willner attacked three individuals outside Sally’s Bar in Kip’s Bay during the early hours of a Saturday and is scheduled to return to court on July 17th for further proceedings.

According to a criminal complaint, Willner allegedly went nuts around 3:30 a.m. when the trio shooed him away after he asked them to buy cocaine.

The men told him “this was not the place for that,” the complaint said, and he allegedly pulled out a knife and slashed all three, including a 45-year-old victim who suffered a gash in the neck.

Willner was arraigned on attempted murder and assault charges Sunday and pleaded not guilty.

He was quickly released on bail set at $100,000 cash or a $200,000 bond.

Willner and his mom refused to answer questions on their way out of court Thursday.

His father, the late Hal Willner, was a celebrated music coordinator for NBC’s iconic “Saturday Night Live” before his death in April 2020 from COVID-related symptoms.

Arlo Willner’s birth in 2004 prompted a shout-out from The Post.