MK in Zombies 4 (the actor Mekonnen Knife, often credited as “MK”) is described in recent coverage as a 17‑year‑old rising star around the time of Zombies 4’s production and promotion in 2025.

Since Zombies 4 is a very new project and Disney hasn’t put all the cast details in one official bio yet, most fans and entertainment outlets are going off those interviews and “real age of the cast” videos, which consistently place MK in his mid‑teens, specifically 17, during the Zombies 4 era.

Bottom line: when people online ask “how old is MK from Zombies 4,” they’re referring to Mekonnen “MK” Knife, who is about 17 years old in the latest Zombies 4 news cycle.

Information gathered from public forums or data available on the internet and portrayed here.