Alberto Carlos Rosende III is an American actor and singer, known for his role as Simon Lewis in the Freeform supernatural drama Shadowhunters from 2016 to 2019. From 2019 to 2024, he starred as Firefighter Blake Gallo in the NBC drama Chicago Fire.
Early life and education Rosende was born to Martha Cristina Ferrucho and Alberto Carlos Rosende, a major-general in the U.S. Army Reserve. He has a younger brother, Diego, who works in the film production industry. He is of Colombian and Cuban descent. Rosende attended Fort Lauderdale Children's Theater, where he appeared in a number of productions, which included starring as Link Larkin in Hairspray. He attended St. Thomas Aquinas High School in Fort Lauderdale, where he was a member of the STA Players. While there, Rosende performed as Danny Zuko in Grease, Emile De Becque in South Pacific, and Dr. Lyman Sanderson in Harvey. In April 2013, Rosende was diagnosed with testicular cancer. In 2015, Rosende graduated from New York University's Tisch School of the Arts with a Bachelor of Fine Arts.
Career Rosende's first professional acting credit was as a swing dancer in the 2013 short film The Swing of Things. In 2015, he guest-starred in the CBS police procedural drama Blue Bloods, in the fifth-season episode "Sins of the Father", as Carlos Santiago. That same year, he guest-starred in the NBC police procedural drama Law & Order: Special Victims Unit in the seventeenth-season episode "Catfishing Teacher" as Jordan Messina. On May 2, 2015, it was announced that Rosende had been cast as Simon Lewis in the Freeform supernatural drama Shadowhunters, based on Cassandra Clare's The Mortal Instruments book series, which ran from January 12, 2016, to May 6, 2019.
Personal life In December 2021, Rosende became engaged to actress and former Shadowhunters co-star Tessa Mossey. The couple got legally married in 2022, before having their ceremony in 2025 surrounded by friends and family in Prince Edward Island. The wedding was followed by Hello! Magazine and photos were published in August 2025. Exclusive: Inside Chicago Fire star Alberto Rosende's 'dream' wedding to Tessa Mossey, from a co-star reunion to custom outfits and vintage finds https://www.hellomagazine.com/brides/852934/inside-chicago-fire-alberto-rosende-wedding-wife-tessa-mossey August 29, 2025
Filmography + Television and film roles Year Title Role Notes 2013 The Swing of Things Swing Dancer Short film 2015 Blue Bloods Carlos Santiago Episode: "Sins of the Father" Law & Order: Special Victims Unit Jordan Messina Episode: "Catfishing Teacher" 2016 Jahar David Short film 2016–2019 Shadowhunters Simon Lewis Main role, 55 episodes 2019–2024 Chicago Fire Blake Gallo Main role (seasons 8–11); guest role (season 12) 2019 Chicago P.D. Episode: "Infection: Part III" 2020 Story Game James Short film 2022 Chicago Med Blake Gallo Episode: "Everyone's Fighting a Battle You Know Nothing About"
Awards and nominations Year Nominated work Award Category Result Ref2018ShadowhuntersTV Scoop AwardsBest Drama Actor
References
External links