A gangster with a metal nose in Picard's Dixon Hill holodeck programme, whose nightclub party gives Picard the weapon he uses against two Borg drones in Star Trek: First Contact.
Nicky the Nose is a character in the Dixon Hill detective stories that Picard plays on the holodeck. He is a mobster in 1940s San Francisco, known for the metal nose he wears.
In Star Trek: First Contact, Picard and Lily Sloane duck into the holodeck with two Borg close behind. Picard runs a chapter set at a crowded nightclub dance, where Hill's acquaintance Ruby tries to claim his attention, and searches the room for Nicky.
When the gangster and his bodyguards appear, Picard knocks one of them down and takes the machine gun hidden in his violin case. With the holodeck safeties disabled, the simulated bullets are real enough to destroy both drones.