Wonder Woman made her DC Comics debut in 1942’s “All-Star Comics” #8, and since then, she has become one of the cornerstones of the DC universe. Comic books often have flexible timelines, but with more than 80 years dedicated to battling evil and safeguarding Earth, how old is Wonder Woman today?

This question is one of the most challenging regarding Wonder Woman. Hailing from the mystical island of Themyscira, she’s an Amazon who, despite her human appearance, differs greatly. Wonder Woman is immortal and ceases to physically age after reaching maturity. The comics are ambiguous about how long she resides in Themyscira before venturing into our world for the first time, and they also vary on the timeline of her departure. Wonder Woman’s backstory comprises about half a dozen origin stories, each of which has been considered canonical at one point.

DC’s most formidable female hero is almost always portrayed as being in her 20s, yet in reality, she might be hundreds or even thousands of years old. As with many aspects of comic book mythology, the truth about her age is influenced by the specific story you are engaging with.

There are two things that all the comics agree on about Wonder Woman: she’s from Themyscira, and her actual name is Diana. Throughout the years, though, the particulars of her origins have changed quite a bit. Readers first met Wonder Woman in the Golden Age of comics, and at the time she was notably less human than she is today: In Diana’s initial origin story, her mother Hippolyta makes her from clay and uses magic to give her life.

That origin changed after the “Crisis on Infinite Earths” crossover events of the 1980s. In the new continuity, Diana is one of the first children born on Themyscira, making her thousands of years old by the time most of the comic stories take place. After that, another reimagining came in 2011 with DC’s “New 52” reboot. In some of those stories, a young Diana interacts with Megalodons – giant, now-extinct ancient sharks that once protected Themyscira — so it’s safe to assume she’s thousands of years old by the time she joins the Justice League.

Believe it or not, there’s another, even more current iteration of Wonder Woman’s history. DC rebooted its universe again in 2016, and this time, Diana is actually born from Hippolyta. As in the classic stories, Diana leaves Themyscira with Steve Trevor, but in this version, her first adventures on Earth happen in modern times. Even in this rendering of the continuity, though, it’s likely that Diana is much older than a regular human.

Wonder Woman’s on-screen presence has always more or less lined up with her comic book depiction. Gal Gadot’s version of the character had the classic Wonder Woman origin story, complete with meeting Steve Trevor during World War I. Surprisingly, after seeing her in four movies (plus cameos in two others), we still have plenty of questions about the DCEU Wonder Woman, although the abandonment of that universe means we aren’t likely to get answers to them now. Her exact age is one of the many things about the live-action character that will remain a mystery.

Lynda Carter played one of the best-known versions of Wonder Woman in a 1970s TV series, and her Diana addressed the age question head-on. During the events of “The Return of Wonder Woman,” a TV movie which aired in 1977, the eponymous superhero says that she’ll be 2,527 years old on her next birthday. That makes Carter’s Diana younger than many of her comic book counterparts — but also certainly older than she appears.