Not much is known about Sevika's childhood, but she is stated to have had a somewhat rocky relationship with her father. As a resident of Zaun, she eventually became fed up with the Piltovan Enforcers attacking the undercity streets, and grew to believe that the only way to earn the respect of Piltover was by fighting back in a violent uprising.Sevika is first seen as a customer in Vander's bar, where she questions his plans for negotiations with Piltover. Vander's pacifistic and somewhat resigned speech fails to sway her, and she storms out along with several other patrons, much to Vander's dismay.[1]

Having abandoned Vander, Sevika instead turned her loyalties to the criminal kingpin Silco, who was building an army of Shimmer-enhanced soldiers to start a violent uprising against Piltover. Silco kidnapped Vander to convince him to join him, but when Vander refused, they had him locked up instead to lure Vander's children into a trap.[2]

However, this plan would backfire when Powder used a bomb made of Hex crystals, which destroyed the entire complex and nearly killed Silco. Sevika was able to protect Silco from the blast, but lost her left arm in the process. Soon afterwards, Silco would adopt Powder as his daughter (renaming her "Jinx"), much to Sevika's annoyance.[2]Years later, Sevika had worked her way up to being Silco's top enforcer, having acquired a Shimmer-infused mechanical arm and overseeing a multitude of operations within the criminal empire. However, Sevika remained skeptical of Jinx's usefulness to their cause, and frequently told Silco that she was a liability. However, Silco dismissed these claims, leaving Sevika to clean up all of Jinx's messes.[3]

After Vi returned to Zaun, she attacked Sevika and questioned her on Powder's whereabouts. After informing her that Powder now works for Silco and changed her name to Jinx, Sevika stabbed Vi and prepared to finish her off before she was rescued by Caitlyn, causing Sevika to retreat. She then informed Silco of Vi's return, and the gang gave chase.[4] Sevika was later overpowered and interrogated by Jinx, who tied her up in Silco's office after learning that her sister was alive.[5]

Following Jinx's disappearance, Sevika accompanied Silco to a meeting with the Chem-Barons, who started questioning Silco's leadership before he strongarmed them back in line.[6] However, Baron Finn continued to undermine Silco and privately urged Sevika to betray him, since Silco was clearly struggling to reign in Jinx, while also staying in control of his criminal empire, something Finn thought made Silco soft.[7] After a Shimmer production plant was destroyed by Vi and Jayce, Baron Renni joined the insurrection, and the barons planned to have Silco assassinated. After a tense exchange, Sevika proved her loyalty to Silco by killing Finn, which again brought the other barons back in line.[8]

Afterwards, Silco left the undercity for a parley with Jayce, leaving Sevika in charge in his absence. During this time, Vi entered the Last Drop in hopes of finding Silco, and once again battled Sevika. While Sevika initially got the upper hand on Vi, the fight ended in her defeat, with Vi ripping off her mechanical arm. Afterwards, Sevika awaited Silco's return, unaware of his death at the hands of Jinx.[