Anthony Russo and Joe Russo serve as executive producers alongside Remender, Feldsott, Mick Betancourt, Lee Toland Krieger, Mike Larocca and Adam Targum. Filming takes place in Vancouver, British Columbia. Principal casting for the pilot of the series was released by Syfy in November 2017, with Benedict Wong, Benjamin Wadsworth, Lana Condor, María Gabriela de Faría, Luke Tennie, Liam James and Michel Duval announced as the pilot's leads. In April 2018, the series was picked up for an order of 10 episodes.  The visual effects for the series, including the Las Vegas sequence in Episode 5, were created by FuseFX, CVDVFX, Zoic and One.
When his strength was overridden by his father's weight, Marcus Arguello saved Billy by killing his father for him. In 1987 San Francisco, Marcus, a homeless teenager, fights for survival and unexpectedly finds purpose to his life when he is recruited by Master Lin, the headmaster at an elite academy of assassins called King's Dominion.
Billy felt abandoned and hated his father for never loving him. Marcus reveals Chester's threat and their shared history to Saya, who along with Billy help him set out to track Chester down. However, when they fight began, their friend Paulie ditched them. Feeling remorse for killing Rory, Marcus begins to socially integrate himself into the school. Their friend, Chico, followed them on a wild night in Vegas and ended up being killed by them when things turned violent. deadly class marcus arguello marcus lopez saya kuroki maria salazar billy bennett marcus x billy men showing emotion progress deadly class syfy deadly class 1x03 … Maintaining his moral code while surviving a ruthless curriculum, vicious social cliques and his own adolescent uncertainties soon prove to be vital.. Ever since that day, he was afraid to use a gun. , When Marcus was later attacked by Chico, Billy attempted to help Marcus and was stabbed in the process. Doralynn Mui as Riku: A top lieutenant in the Kuroki Syndicate.
Isaiah Lehtinen as Shabnam: Son of a wealthy banker who is shunned by his peers. He instead told the story that his father was killed in front of him in his own home. Willie bonds with his girlfriend. Willie was a member of the initial team that warned Marcus at the parade and saved him from the police chasing him. Tensions boil over between the Kuroki and Soto Vatos, with Saya and Maria caught in the middle.
 It was picked up to series by Syfy on April 18, 2018, for a planned 2019 debut. It stars Benedict Wong, Benjamin Wadsworth, Lana Condor, María Gabriela de Faría, Luke Tennie, Liam James and Michel Duval. It has received mixed reviews from critics, with many praising the cast, visuals, and choreography while criticizing the tone and pacing. , Billy assisted on the assault on the tenderloin. deadly class marcus arguello marcus lopez saya kuroki maria salazar billy bennett marcus x billy men showing emotion progress deadly class syfy deadly class 1x03 …
Chester prepares to make his debut as a serial killer, and sets the stage for a confrontation with Marcus.