|Sofia Pernas as Marisa Sierras|
|The Young and the Restless|
|Portrayed by||Sofia Pernas|
|Current status||Former, Recurring|
|First appearance||June 2, 2015|
|Last appearance||February 24, 2017|
|Cause/reason||Moved to Spain to be with her daughter, Ava|
|Full name||Marisa Sierras|
|Nickname(s)||Marisita (by Marco)|
Manuela (by Marco and Phyllis)
|Residence||Genoa City, Wisconsin|
Marisa appears on a drug ship rushing to Jack Abbott tied up who she and the two men believe is Marco Annicelli, her boyfriend. Jack is in big trouble and the captain is holding him hostage. Marisa insists Jack has some explaining to do for leaving her. Jack insists he'll explain later and asks her to help him break the chains. As Marisa tries to free Jack, the captain busts them. Jack informs Marisa that although he looks identical to her lover, he is Jack Abbott from Genoa City, he is the CEO of his company, Jabot. Marisa promised Jack she'll get him back to Genoa City but only if he takes her with him which he agrees. The captain busted them again and chained them up again. Marisa allured the captain into kissing her so he'll unchain her.
Jack breaks his chains and finds some steel wool used to keep the mice away and asked Marisa to try to find a battery. Marisa found one and Jack conducted a fire. Marisa took the captain upstairs and got him drunk. The captain overheard Marisa and Jack arguing but Marisa and Jack jumped off the ship and the ship blew up, killing the captain and crew.
Marisa and Jack survived the explosion and were able to arrive in a shack. Marisa thought Jack was unable to breath in the shack but then he awoke. Jack thanked Marisa for saving him. Marisa said she was going to get clothes and Jack accused Marisa of planning to leave him. Jack told Marisa to call his siblings for him to inform them that he is alive and that Marco is the fake Jack in Genoa City.
Marisa questioned why they would believe her. After the call, a thug came to kill Jack but Jack and Marisa got the gun from him while Jack impersonated Marco, threatening him. Jack arrived in the Abbott Mansion and was surprised to see Phyllis and just wanted to share a moment with her. Jack stated he had to tell her something very important when Summer barged in and was angry with Jack for setting up her grandfather, Victor, for embezzlement. Jack got a text from Marisa to meet her at the Athletic Club.
Marisa got a room at the Athletic Club and was upset that Jack went to see his family first. Marisa explained Marco was at a table talking to a man named "Bingham" which she casually asked the staff member. Jack recognized him as Adam Newman. Marisa stated she couldn't overhear what they were talking about but it seemed they were keeping a big secret. Marisa found out Jabot has been merged and renamed to Newman-Abbott and that Victor and Marco were meeting in Chancellor Park, which she pronounced as "Chandler" at first, for some sort of showdown.
Jack left to join them while Marisa called Chief Paul Williams. Victor argued with Jack, whom he thought was Marco. When Jack reached into his suitcoat, Victor believed Marco was going to shoot him, and shot Jack. Gabriel Bingham, who Marisa knows is Adam, persuaded Victor to hand over him Newman-Abbott in exchange for covering up for Victor. When Marco arrived later, Adam and Marco were shocked that Victor had shot the real Jack Abbott. Marco left before Paul Williams arrived and Jack was rushed to Genoa City Memorial Hospital.
Marisa let Marco enter her hotel room under the impression that he was Jack. She soon realized by his attitude that he is Marco. They fought, he kissed her, and she bit him, and said that she hated him. Marco tried to persuade her to get on a flight to the Caribbean and Marisa pulled a gun on him insisting that she'll turn him in for what he did to Jack.
Marco dared her to shoot him, but because she still loved him, she could not. Marisa wanted a better life in the U.S. without Marco. Marco lied that both Victor and Jack were going to stab her in the back and persuaded her to get in the car with him and travel someplace else. Marisa soon realized that Marco planned to take her someplace to kill her instead. Marisa grabbed the steering wheel and drove off the road into a lake. Marisa assumed Marco had drowned in Lake Delaney. Marisa staggered into The Underground, wet and shaken, where Noah Newman assisted her.
She told Noah that she and her boyfriend had had a fight, and she had nowhere to go. Noah gave her a blanket and coffee, and let her spend the night on the office couch. The next morning Noah hired her to work at the Underground and got her a room at Genoa City Athletic Club. Marisa couldn't believe that someone could be so kind to a stranger like her. At first, Marisa couldn't accept but Noah insisted he doesn't mind paying for it.
Jack had told Marisa about his friend Gabriel, a young man who was actually Victor Newman's presumed dead son, Adam. But Adam had gotten plastic surgery and was posing as Gabriel Bingham as part of a plot to get revenge on his father and resume his life with his wife Chelsea and son Connor. Marisa called Gabe telling him that she could be his greatest ally or worst enemy.
Adam asked if they could meet, Marisa answered, "Eventually." Later that day, Noah introduced his new employee Marisa to Chelsea. Marisa knew her designs and was impressed to meet the Chelsea Lawson, and met "Gabe" who was with her.
Noah told Marisa about his brother-in-law Austin's and his bride Courtney's murders being traced by DNA to drug lord Marco Annicelli, and how the FBI ended up matching the DNA to Tobias Gray instead. Marisa told Noah she did not know Marco, but that her boyfriend had traveled in the same circles, but that he was gone and could not help. Phyllis caught Marisa talking to Jack in his hospital room.
Noah intervened and identified her. Jack would not answer if he knew Marisa. Noah asked Marisa what she was doing in Jack's room, asking if it had anything to do with Marco. Marisa told Noah to forget Marco.
Marco returned to Genoa City, and Marisa helped capture him. Victor sent Marco back the Peruvian prison he was in, and warned Marisa not to speak of this to anyone. Marisa's husband, Luca Santori came to Genoa City, and Marisa lied about being married to him. When Noah found out the truth, he broke up with Marisa. Desperate to regain Noah's trust, Marisa told Noah all about Victor and Marco.
This didn't help their relationship, and Marisa planned to leave town. Marisa was then attacked and hospitalized. Noah blamed Luca, and Luca believed his father, who never liked Marisa, may have been behind the attack. Noah softened towards Marisa after the attack, but Luca had an ace up his sleeve. Luca told Marisa he found their daughter Ava that she gave up for adoption.
Luca agreed to divulge the location of their daughter to Marisa if she stayed with him for one month. Marisa agreed to Luca's terms, but continued to see Noah behind his back. Luca found out about it, and told Marisa she had blown the chance to reunite with her daughter, but when he saw how desperate Marisa was, he relented and they went to see their daughter. Luca had lied and told Marisa that their daughter, Ava, was being abused by the people that had adopted her. When Marisa saw the truth for herself, she decided to let Ava stay and be raised by her loving adoptive parents.
By the time Marisa and Luca returned to Genoa City, Marisa's opinion of Luca had completely turned around, and she constantly defended him to Noah and Mariah. Marisa moved into Luca's suite at the Athletic club, quit working at the Underground with Noah as a bartender, and began working with Luca at Newman Enterprises. Marisa and Luca made love and reconciled.