Nick St. Clair is a minor villain from the series Riverdale based on Archie Comics. He is an old friend of Veronica Lodge from her earlier years, and comes to Riverdale with his parents when they attempt to secure a business deal with Nick's father. As Nick "has his father's ear", as Hiram Lodge puts it, it is hoped that Veronica could win him over by playing off of their prior friendship.
When first met, Nick seems charming and affable, but it soon becomes apparent that he has a drug habit, indulging in various kinds of drugs and urging Veronica and her friends to do the same. He takes a shine to the Pussycats and Cheryl Blossom, but at a party that he has with them, Veronica, Betty, and Archie, he peer-pressures several of them into having drugs with him, and after the party ends he makes unwanted advances on Veronica. Despite her insistence that she is with Archie, Nick pushes, and becomes angry when Veronica demands that he stops. In this moment, Nick's true character is revealed as he complains that Veronica always flirted and teased but then never indulged him. He then venomously threatens to sabotage her father's planned business deal with his father if she does not indulge him.
Later at a party being held in celebration of the Lodge's business venture, Nick approaches Veronica pretending to be repentant, but then spikes Cheryl Blossom's drink and takes her off to his hotel room when the drug starts to take effect. Fortunately, Veronica and the other Pussycats see this, and, correctly guessing Nick's intentions, pursue. They break into the hotel room right before he can date-rape Cheryl, and kick him into submission.
Later, when being blackmailed by The Black Hood into giving him the name of a guilty person to kill in lieu of her family, Betty (with some reluctance), names Nick St. Clair. She then in the following episode runs to the hotel to make sure the Black Hood has not yet killed him, arriving moments before the police do to arrest him for his rape attempt. However, Penelope Blossom cuts a deal with the Lodges to keep the case from going to trial, something Nick later rubs in Cheryl's face at Pop's Diner, confident that he will walk. As Veronica and Josie had earlier taken drugs that stay in their system for a few days, they are considered unreliable as witnesses, and so cannot testify against Nick on Cheryl's behalf. That is, until Veronica admits to her parents that Nick attempted to force himself on her, something she had been hesitating to do for fear her father would murder Nick in retaliation. The Lodges then cease their dealings with the St. Clairs, rendering their reason for keeping Nick out of a courtroom null and void. Simultaneously, Penelope decides to reject the check of hush money, having by then reconciled with her daughter.
At the end of the episode, it is revealed that the St. Clairs had an "accident" whilst in their car, with it being strongly implied that the Lodges arranged it in retaliation for Nick's attempted rape of their daughter. Nick survives, but is said to now be hospitalized, and that it will take him some months to recover. Pleased that Nick got some amount of karma for his actions without her parents killing him, Veronica notes: "Oh well. Karma's a bitch".
Recovering at Greenwich Prep
Nick was sitting in the bed of his dorm room at Greenwich Prep when he received a surprise visit from Archie. He demanded to know what Archie was doing in New York and why he was wearing a blazer. Archie asked if he remembered Cheryl Blossom, the girl he tried to rape at the Open House. Unfortunately, the cheque his family wrote to "cover the damages" got lost. Archie was there to request that he write her another cheque, for double the amount of the previous one. Nick was surprised to learn that Archie had only come by for money, telling him that the checkbook was in the desk. Archie asked Nick what happened to him after noticing the casts on his legs. Nick replied that it was a Ski accident. He broke both his legs on the slopes, but he couldn't understand why Archie cared. Archie didn't, he explained. He was merely curious. It was weird that Nick came to Riverdale, acted like a jackass, tried to rape Cheryl and then blew up the deal between the Lodges and his family, only to go back down to Vail for a Ski weekend. To Archie, that seemed weird. Through Archie's tone and line of questioning, Nick concluded that he wasn't there for Cheryl. He wasn't even aware that Archie and Cheryl were friends. Archie insisted that he was there to ensure that Cheryl was compensated and that they were friends, but that Nick was likely too high off Jingle Jangle to notice. In spite of all this, Nick still questioned why Archie had really come Greenwich Prep. Archie revealed that it was payback for what he did to Cheryl and Veronica. Still, Nick questioned his intentions. He surmised that Archie was just a small-town hick who was beginning to realize how deep into shark-infested waters he really was. Nick advised Archie to be careful because when Veronica smells blood, she'll turn on him too. This sent Archie into a frenzy, as he attacked Nick, punching him multiple times.
Shortly after Archie left Greenwich Prep, Nick texted Veronica to inform her of the assault, claiming that Archie broke his nose and was foaming at the mouth.
Making His Bones
Nick returns to Riverdale with two of friends and ambushes Archie. He takes Archie to a warehouse and restrains him to a chair before calling Veronica to tell her that it'll cost her to get Archie back. He wants $1 million. Veronica reminds Nick what happened to him the last time he misbehaved. Nick needs no reminder as he will have a limp for the rest of his life following the car accident. So either Veronica gets Nick what he asks for or he will take his anger out on Archie.
Archie pleads with Nick to be released given that the Black Hood is still at large. Nick thought that the Black Hood was dead, but Archie informs him that this may no longer be true. Furthermore, Archie's dad may be in danger though Nick doesn't care. Nick explains that he's about to be disowned by his father thanks to Archie, Veronica and the Pussycats. Nick is viewed as an embarrassment who'll never have the guts to run the family business. Which is why he grabbed Archie. He's going to "make his bones" with Archie. Nick's friends then hold Archie down as Nick assaults him.
Not long after, Nick gets a call from Veronica to confirm that she has his money. So they arrange a meeting a Pop's in one hour for them to do the transaction. Nick and Veronica meet at Pop's as planned. Before they do anything, Veronica wants proof that Archie's okay. Nick shows Veronica a photo he took of Archie, bruised and bleeding. Seeing that he's at least still alive, Veronica hands him over the money though he instantly realizes that it isn't the $1 million he asked for. Veronica swears that she'll get him the rest, but if not from her parents, how else would she get that kind of money, Nick asks. Unless Veronica gives Nick something else. What they started back in New York and even at the Five Seasons. Nick wants a night with Veronica. Even if Veronica does agree, what guarantee does she have that Nick will let Archie go? Nick gives her his word as a gentleman.
Nick tells Archie that his laptop is going to have a live feed of his suite at the Five Seasons where he and Veronica will be on a date. Archie initially believes that Nick is lying, but realizes that this is not the case when Nick reveals that he told Veronica that he would let Archie go afterwards. Archie remarks that he'll kill Nick. Which Nick takes to heart. That's why this can only end one way. When he said that he was going to make his bones, he meant it. But you have to kill someone for that. And who better than Hiram Lodge's Capo.
That night, Veronica arrives at the Five Seasons for their date. Nick questions why she's still in Riverdale when all of Manhattan should be kissing her feet. Nick writes it off as a phase, as well as her relationship with Archie. Unbeknownst to Veronica, Archie is watching their date via live stream. She tells Nick to have a seat as she fixes them both some drinks. Nick believes that he and Veronica could've been so much more as her relationship with Archie is beneath her. Veronica asks that he stop talking about Archie. He agrees and then takes a drink. Nick recalls that he and Veronica used to joke about ending up together one day. That stopped when Nick started roofy-ing girls, including Cheryl. Nick claims that this is all in the past, simple school boy mischief. He then asks Veronica for a dance.
Nick falls unconscious after being roofied by Veronica. To make matters worse, Archie escaped and made his way to the Five Seasons. In retaliation, Veronica and Archie restrain him to a chair before calling his parents and demanding $1 million in ransom for Nick's return.
- Nick represents the second villain in Riverdale who initially appears an affable and charming young man with an interest in Veronica Lodge who is then revealed to be a toxic misogynist who later only pretends to be sorry for previous bad behavior. The first was Chuck Clayton.
- Over the last three months, prior to visiting Riverdale, he has been in and out of rehab