When New Yorkers feared their subway and streets amid a crime wave in the late 1970s, Curtis Sliwa donned a red beret and seized the moment, pioneering a movement of citizen patrols — the Guardian Angels — that made him famous. He was 24.If ever he risked fading from public view in the years after, Mr. Sliwa found increasingly outlandish ways to hold onto the spotlight: faking his own kidnapping, wearing a red wig on television to impersonate a New York City Council speaker, even getting arrested while waving court papers at Mayor Bill de Blasio outside Gracie Mansion.Not surprisingly, perhaps, some people questioned whether it was just another publicity stunt when Mr. Sliwa, who registered as a Republican last year, announced that he was running in the party’s primary for mayor. Yet he won, riding his decades-old name recognition and casting his time patrolling the streets and his leadership of the Guardian Angels as his main qualifications for becoming mayor.With Election Day approaching on Tuesday, he is trying to ride that celebrity again in his campaign against a heavily favored Democrat, Eric Adams.“I’ve been shot, stabbed, beaten in the streets of New York City, locked up 76 times,” he said at a recent campaign stop. “I’ve been David versus Goliath from Day 1 in my entire life.”But an examination of Mr. Sliwa’s career reflects a record far messier and more complicated than the comic-book hero image he has worked to foster. Interviews with more than 40 current and former members of his group, critics and other associates portray a charismatic figure whose frequently clownish acts belie a sharp intellect and keen media savvy. They also reveal a string of missteps in his public and private lives that have harmed his credibility, and a comfort with physical aggression, machismo and racist and sexist rhetoric that has made even some who are close to him uneasy.What a Sliwa mayoralty would look like is anyone’s guess — an unpredictability he shares with his opponent, Mr. Adams. Would he dress up in costumes for news conferences? Tackle a purse snatcher on the street?His campaign platform calls for hiring thousands of police officers, placing homeless people in psychiatric beds at hospitals, expanding the gifted program in the city’s schools, overhauling the property tax system and eliminating the killing of animals at shelters. He has said less about creating jobs or reviving New York’s flagging economy, closing the city’s gaping budget shortfall or addressing the inequalities that the pandemic laid bare.Mr. Sliwa confronting his Democratic opponent, Eric Adams, at the second mayoral debate.Pool photo by Eduardo MunozBut for a Republican, the underpinnings of any policy decisions would spring from an unusual place. Mr. Sliwa said he grew up reading Saul Alinsky’s “Rules for Radicals,” an influential blueprint for liberal activism. And although he has named Rudolph W. Giuliani as the ideal New York mayor, he said in an interview that he identifies most closely with Huey P. Long of Louisiana, the Depression-era Democratic governor and senator known for his progressive politics, and for allegations of corruption and demagogy. Mr. Sliwa said he appreciated Long’s populism but added: “He was also a real scoundrel, you know, and pretty crooked.”After winning the primary, Mr. Sliwa brought the full force of his publicity-seeking skills to bear in the general election campaign. He showed up at a New Jersey apartment building to suggest that Mr. Adams, the Brooklyn borough president, lived there and not in New York. He also carried a milk carton bearing his opponent’s picture on to the B train in Brooklyn, asking passengers, “Have you seen this man?”Although he struggled at times to break through in the media, Mr. Sliwa made a splash at the final debate, seeming to put Mr. Adams on the defensive by accusing him of being too willing to meet with gang leaders in the past. (Mr. Adams said he had met with them to encourage them to leave gangs.)In the campaign’s final days, Mr. Sliwa has continued to court controversy, becoming a cheerleader for city workers who are resisting Mr. de Blasio’s vaccine mandate and appearing at protests.Few who have followed Mr. Sliwa’s career are surprised. “For the most part, the person you see in public making bad rhymes before the camera is now the actual person,” said Ronald Kuby, a lawyer who once co-hosted a radio show with Mr. Sliwa as his liberal foil and is now a pointed critic. “It’s just one long, desperate and reasonably entertaining cry for attention.”Making headlinesMr. Sliwa, left, with a group of Guardian Angels in 1984.Joe McNally/Getty ImagesMr. Sliwa, 67, loves to tell stories. He has not always been a reliable narrator.He can hold forth on the history of Brooklyn political bosses in one breath and in the next recount a showdown with an Oregon religious sect. He will describe the used car commercial he shot with the Times Square performer known as the Naked Cowboy. He can demonstrate a wrestling move called the Sicilian backbreaker that he says he used to subdue wrongdoers.There was the time on a trip to Washington when he was thrown into the Potomac River by parties hostile to the Guardian Angels. The time he assaulted an undercover police officer he mistakenly thought was attacking a mechanic. And the time he buried a kindergarten classmate in a sandbox for pulling on a girl’s pigtail once too often.Pinning down facts can be difficult, as intertwined as many tales told by Mr. Sliwa — and by others about him — have become with Guardian Angels lore.But he was born in Brooklyn in 1954. When he was growing up in Canarsie, his father, a sailor with the United States merchant marine and a liberal Democrat, and his mother, a churchgoing Catholic, encouraged him and his two sisters to embrace public service. His younger sister, Maria Sliwa, recalled him as a fiercely intelligent child. “He would inhale books,” said Ms. Sliwa, who works for his campaign. “He didn’t have to study, and he’d get an A.”Yet Mr. Sliwa dropped out of high school. He married briefly in his early 20s and moved to the South Bronx, where he worked as a night manager at a McDonald’s on East Fordham Road — regularly chasing robbers out of the restaurant, he said. With a stream of shockingly violent crimes playing on the evening news, an idea took hold. Soon, he had banded with a dozen other young men, and they began to patrol the subway in red berets. In 1979, the group became known as the Guardian Angels.City officials quickly branded them vigilantes.“He wanted to play cops and robbers with the so-called Guardian Angels, who were underage, untrained, and had no business trying to police the subways,” said Bill McKechnie, who led the transit officers’ union at the time and became Mr. Sliwa’s nemesis.The public took a different view. As the Guardian Angels’ exploits were recounted in the city’s newspapers, many New Yorkers cheered them on: The group’s members returned a wallet full of cash to its rightful owner. They tried to stop a mugging. They saved a token booth clerk. Mr. Sliwa kicked a shotgun from the clutches of a much larger man, while falling off a subway platform.Mr. Sliwa spent his days giving interviews, sometimes on national television. With his second wife Lisa, also a leader of the Guardian Angels, he was photographed for magazine stories. The group became the subject of a TV movie in 1980. Soon, he expanded to cities across the United States, and then to other countries.Mr. Sliwa and his second wife, Lisa Evers, on their wedding day, Christmas Eve, 1981. Bettmann Archive, via Getty ImagesIn later years, Mr. Sliwa would parlay his fame into lucrative radio and TV contracts. By the late 2000s, he was earning about $600,000 a year and had married his third wife, Mary. In 2006, they bought a $1.6 million apartment on the Upper East Side.Some who have patrolled with Mr. Sliwa say that he inspired them into activism and was a strong leader who always stayed at the front if they ran into danger.“People think Curtis is only there when the cameras are there,” said Keiji Oda, the group’s international director, who joined as a college student. “Curtis likes the camera, nobody denies that. But he is always there, even without the reporter.”But other former members became embittered by his tactics. Some accused him of faking heroics for headlines; he called them liars. Others grew angry about group members who had gotten hurt in the line of duty, with some saying training was inadequate.Six members of the Guardian Angels died. The first, Malcolm Brown, was 19 when he was fatally shot trying to stop a robbery in 1981. Malcolm’s mother, Ruthie Nelson, said in an interview that she believes her son might still be alive if he had not joined the organization. “He wanted to make a difference, but in hindsight I would have done anything I could to deter him from joining the group,” she said.In an interview, Mr. Sliwa said he was sorry for Ms. Nelson’s loss, but that all members joined the group voluntarily.Then came a revelation so damaging to Mr. Sliwa’s credibility that, by his own admission, he has never recovered. It followed a bout of conscience he said he had after nearly being fatally shot by a member of the Gambino crime family, whose leaders Mr. Sliwa had skewered on the radio.Upon seeing the outpouring of well wishes from New Yorkers in 1992, Mr. Sliwa confessed to The New York Post that he had made up stories to burnish the Guardian Angels’ image. The return of the wallet had been staged. There was no man with a shotgun on a subway platform.More recently, he said in an interview that he had invented the stories to gain traction against his critics and that he deeply regretted it. “If I could do it again, I would never do it,” he said. “It has followed me everywhere.”A second actBill McKechnie, a former leader of the transit officers’ union, has kept newspaper clippings about Mr. Sliwa’s fabrications. Saul Martinez for The New York TimesEventually things began to take a turn for Mr. Sliwa.His third wife, Mary, with whom he had a son, had become a formidable fund-raiser for the Guardian Angels, helping to organize golf games, poker tournaments and lavish galas that attracted prominent figures like Mayor Michael R. Bloomberg. The group was raising more than $1 million a year, tax filings show.Mr. Sliwa and his third wife, Mary, in 2010. Bobby Bank/WireImage, via Getty ImagesBut Mr. Sliwa was having an affair with another woman, Melinda Katz, who is now the Queens district attorney. They had two sons who they say were conceived through in vitro fertilization while he was married to Mary, leading to a messy breakup.Less than a year after they divorced, in 2012, the marital breakdown exploded in the tabloids. Mary Sliwa sued her former husband and Ms. Katz, accusing them of scheming to divert hundreds of thousands of dollars to support Ms. Katz and their two children and calling Mr. Sliwa “an inveterate, world-class liar.” The suit was later dismissed.Ms. Katz ended their relationship in 2014 and declined to discuss it beyond issuing a statement: “Curtis is the father of my children and obviously holds a very special place in their lives,” she said.Melinda Katz, who is now the Queens district attorney, with Mr. Sliwa in 2014. He is the father of her two sons. WENN Rights Ltd, via AlamyMr. Sliwa now pays about $15,000 in monthly child support for his three sons, a large share of the $400,000 annual income listed on a copy of the 2019 tax return that he provided to The New York Times. He also had judgments of nearly $250,000 recorded against him in 2016 for debts to his divorce lawyers, and he said he could not afford to pay $2,600 in taxes, penalties and interest owed to New York State by a company he used for paid speaking engagements. “I don’t have two nickels to rub together,” Mr. Sliwa said.As his romantic relationships were imploding, his career as a commentator was also heading in the wrong direction.A frequent guest on NY1 news segments, Mr. Sliwa had begun wearing costumes and incorporating props to ridicule elected officials. As time went on, the skits flirted with and sometimes crossed the line between satire and racism and sexism. In a 2010 NY1 appearance, bantering about the outgoing governor, David A. Paterson, who is Black, Mr. Sliwa broke into street slang and said, “My brother, my brother, give me some skin.”He mocked the New York City Council speaker, Christine Quinn, by wearing a bright red wig, which Ms. Quinn described as a sexist attack; he wore a sombrero and waved miniature Mexican flags while criticizing undocumented immigration; and he commented on the physical appearance of another female council speaker in sexually explicit terms.In 2018, NY1’s new owners let him go, but Mr. Sliwa continued doing talk radio on the conservative AM station WABC, where he takes phone calls and holds forth on culture, politics and relationships.Mr. Sliwa with the lawyer Ronald Kuby, his radio co-host, in 1998. “It’s just one long, desperate and reasonably entertaining cry for attention,” Mr. Kuby said of Mr. Sliwa’s career.Librado Romero/The New York TimesHe acknowledged mistakes but he also lamented what he called a “snowflake culture” that made his brand of political satire unacceptable. “I’m not a wallflower, OK?” he said. “I don’t know how you do satire and parody and do costumes and not offend people.”Mr. Sliwa said he had been sleeping on the floor at WABC when he met his fourth wife, Nancy. They live together in her small studio apartment with, by the latest count, 17 cats.Then, in March 2020, he said he would run for mayor, hoping to capitalize on his background at a time when New Yorkers were worried about crime. He took a leave from his radio show and went on to defeat his Republican opponent, Fernando Mateo, in June.Mr. Sliwa has waded into the culture wars during the campaign, lambasting Black Lives Matter protesters, and saying that looters had hit him in the jaw with a ball-peen hammer after the murder of George Floyd. His campaign hired a consultant who wrote a supportive opinion piece about the far-right Proud Boys group. And Mr. Sliwa falsely stated that subway crime had reached record highs and pledged to take “the handcuffs off the police.”At his second debate with Mr. Adams, Mr. Sliwa continued the provocations, falsely claiming that a City Council member who was born in the Dominican Republic was not a U.S. citizen.Mr. Sliwa has strolled the city’s neighborhoods in the final weeks of the campaign, sometimes receiving the sort of reception he might have gotten at the height of his fame 40 years ago.He was on a subway in Washington Heights on a recent Tuesday when a man in an army jacket called out to him. “I’ve got a lot of respect for you,” said the man, Frank R. Hooker Jr., a filmmaker who said he had followed Mr. Sliwa’s career since he was a child. Then he added: “I wish you were a Democrat, that’s the only thing.”Campaigning at a barbershop in Manhattan’s Washington Heights neighborhood. “Most people don’t think of me as anything but Curtis Sliwa,” he said. James Estrin/The New York TimesMr. Sliwa didn’t miss a beat. He urged Mr. Hooker to vote for him on an independent line.“Most people,” he said, “don’t think of me as anything but Curtis Sliwa.”Susan C. Beachy contributed research. More