Jayce Talis is a brilliant, charismatic inventor from Piltover who rises from a lower-house craftsman to become the celebrated "Defender of Tomorrow." Driven by a childhood rescue by a mage, Jayce dedicates his life to stabilizing magic through science, ultimately co-inventing Hextech alongside his partner, Viktor. While initially a idealistic academic, Jayce is thrust into the political spotlight by Councilwoman Mel Medarda, eventually securing a seat on the Council. This sudden political ascension forces him to navigate the corrupt, high-stakes world of Piltovan governance, putting immense strain on his morals. As tensions escalate between Piltover and the undercity of Zaun, Jayce is torn between his peaceful ideals, his loyalty to Viktor, and the aggressive demands of his ruling peers. To protect his city, he weaponizes his research, forging the iconic Hextech Capacitor Hammer. This shift from visionary scientist to reluctant warrior forces him to make devastating compromises, including authorizing militaristic crackdowns and experimenting with lethal force. Defined by his striking, athletic appearance, privileged background, and deep-seated desire to do good, Jayce’s journey is one of heavy burdens.

Viktor is a brilliant, terminally ill scientist from the undercity of Zaun, driven by a fierce desire to lift up the marginalized and improve human lives through technology. Plagued by a failing body, his physical limitations stand in stark contrast to his towering intellect. Alongside his partner Jayce Talis, Viktor co-invents Hextech—the revolutionary fusion of magic and science that reshapes Piltover. While Jayce becomes the public face of their success, Viktor works tirelessly in the shadows, racing against his own mortality. His story takes a dark turn during a desperate, tragic search for a cure to his illness, leading him to experiment with the Hexcore—a highly volatile, reactive Hextech matrix. As the Hexcore adapts and demands organic matter, Viktor’s philosophy shifts toward the "Glorious Evolution," the belief that humanity must transcend its flawed flesh through mechanical and magical augmentation to achieve true potential. Defined by his signature cane, sharp intellect, and eventual shift toward cybernetic and shimmer-infused augmentations, Viktor is a tragic visionary.