How Old Is Milim Nava in Sword Art Online

Let's clear up a common misconception right away: Milim Nava, the formidable Dragonoid Demon Lord, is not a character from Sword Art Online. If you've encountered her, it's almost certainly been in the vibrant, monster-filled world of That Time I Got Reincarnated as a Slime (Tensei Shitara Slime Datta Ken). While she possesses a youthful appearance, often mistaken for a 12-14 year old girl, Milim's true age is a staggering over 2000 years old....