Marco on General Hospital started off as a real mystery man before viewers learned more about the guy. The character first appeared on March 13, 2025, played by actor Adrian Anchondo, who viewers might recognize from episodes of shows like NCIS: Los Angeles, The Rookie, and FBI: Most Wanted. While Marco wasn’t on GH long, here’s everything you need to know about his life and tragic death.
Marco Rios was first seen when Lucas Jones found the credit card he’d dropped in a Miami bar. The attorney introduced himself and offered to thank Lucas by buying him a drink. Lucas got a little too drunk and rambled on about his troubled history with ex-husband Brad Cooper, who had just let him down again, and Marco was understanding. After Lucas planted a kiss on him, Marco asked for his room key, and Lucas was mortified to wake up the next morning not remembering the night before. Marco assured him they did nothing because Lucas was too drunk to consent, but he had to take a shower because Lucas threw up all over him. Mortified, Lucas insisted on getting his number to pay for his dry cleaning.
A few weeks later, Marco arrived in Port Charles to interview with Diane Miller at her law office about joining her law firm. He explained he wanted to move from corporate law to defense law, and represents J&S Associates, which is now based in Port Charles. She was impressed by his list of clients and told him he still needed to interview with her partner, Alexis Davis. After noticing a photo of Lucas on the desk, Marco went to The Metro Court and texted him to join him. After telling Lucas all about the job opportunity, Marco then headed to Wyndemere, where it was revealed that his father was Jenz Sidwell. Diane was stunned when Sonny Corinthos revealed that her firm’s new attorney was Sidwell’s son, and she and Alexis nearly retracted their offer, but he insisted he’d distanced himself from his father’s business as Alexis had the Cassadines’, and they kept him on.
Marco had a strained relationship with his mother, Natalia Ramirez, and was concerned when she planned to skip town rather than turn over evidence on Sonny to the authorities. He was rescuing Kristina Davis from a fire at Charlie’s Pub when his mother died of an accidental overdose. Marco blamed Sonny for his mother’s death and vowed to make him pay. Sonny had Marco kidnapped to use as leverage against Sidwell, but Lucas received a mysterious key and address and managed to rescue his beau. At the police station, Marco declined to accuse Sonny, lying that he’d gotten lost on a hike. Sidwell assured his son that Sonny would pay, but Marco complained he was taking too long.