The introduction of zombie variants has helped spice up The Walking Dead, and one of the biggest questions about these unique forms of the undead provided an answer that was even more gruesome than anticipated. Although they have technically been part of the franchise ever since the first season, variants only became a big deal in the main show’s final outing, with their importance growing in the spinoffs. Their arrival may be great from a drama perspective, but these new zombies also bring plenty of questions, and thankfully, Daryl Dixon helped solve some mysteries about variants and their origins.

https://screenrant.com/the-walking-dead-variant-zombies-serum-daryl-dixon-genet/