Eric Masterson is a fictional character in the Marvel Comics Universe, a superhero that has appeared as Thor and later Thunderstrike. The character was introduced as a supporting character in the Thor title, but continued in several other comic books, including the self-titled series Thunderstrike in 1993. Later interpretations of Thunderstrike would appear in both the MC2 and Heroic Age Marvel Comics storylines, featuring the character's son, Kevin Masterson, as the hero.