2. Magneto

Aliases: Max Eisenhardt, Erik Magnus Lehnsherr
First Appearance: Marvel Comics: Debut issue of X-Men #1, September 1963

Magneto’s tattoo may not be the most flamboyant of the comic lot, but his Auschwitz ID number is the most poignant. Originally branded with #214782 in Uncanny X-Men #161, it was later changed to #24005 in Excalibur (Vol.3, #2) when the original number was too high for him to have been among the first group of Jews to be tattooed there.