Complex sentence: He is nicknamed Ajax and has sometimes been designated as such by fans and media, it's derived from the similarly named Greek hero that inspired Jackson in a history class, one of his tattoos, on his arm, depicts the warrior.
Split into simpler sentences: He is nicknamed Ajax and has been sometimes designated as such by fans and media. It is derived from the similarly named Greek hero that inspired Jackson in a history class, one of his tattoos, on his arm, depicts the warrior.