Eric Masterson First encounter Eric Kevin Masterson was working as an
architect when he met
Thor. Masterson was injured by falling girders, and was taken to the hospital by Thor. Now on crutches, Masterson was attacked by
Quicksand, but saved by Thor. Masterson was then abducted by
Mongoose. Masterson accompanied Thor to the Black Galaxy, where he first met
Hercules. Masterson, mortally wounded by Mongoose, was given Thor's form and powers after the original was sealed in Eric's mind, by
Odin, to save Eric's life. Recognizing that his new life as Thor was too dangerous for a child, Masterson gave up custody of his son Kevin to his ex-wife Marcy, reasoning that Kevin would be safer with her, even if she was relatively ambivalent about her role as a mother. Masterson was then separated from Thor by the
Red Celestial. Shortly thereafter, Masterson saved Thor's life, and was merged with him again. Masterson's son Kevin was captured by
Ulik for
Loki. Thor freed Kevin and seemingly slew Loki in battle.
Heimdall separated Thor from Masterson, then banished Thor, and transformed Masterson into a new Thor. He then met the
Enchantress as Leena Moran, and battled Ulik.
Surrogate of Thor Eric continued in the role of Thor, after having been given Mjolnir by Thor, who then told Eric to carry on as Earth's protector. Eric then returned to Earth and joined the Avengers in Thor's place. He teamed with
Beta Ray Bill and
Dargo Ktor as the "Thor Corps" against
Zarrko and Loki. During his time with the Avengers as Thor, Masterson aided them in such battles as
the Kree/Shi'ar war and the
Infinity Gauntlet crisis, being one of only three heroes at the conclusion of that battle to remember the entire confrontation (the other two being
Doctor Strange and the
Silver Surfer) as he had briefly witnessed Warlock's soul during the fight.
Thunderstrike is born Eric's role as Thor was relatively brief, as the Enchantress manipulated Eric into attacking Thor for Sif's affection. During a confrontation with Thor, Eric struck Sif. This provoked Thor, leading him to defeat Eric and reclaim Mjolnir while Odin revealed the Enchantress's manipulations. Odin then ordered the creation of a new mace for Eric, called
Thunderstrike. Eric first used the Thunderstrike mace against the villains
Bloodaxe and Carjack, but he was promptly defeated. Afterwards, Eric created his own costume to distinguish himself from Thor, while keeping Thor's reputation intact. Eric renamed himself Thunderstrike, after the mace itself, operating as an adventurer and crimefighter. Eventually Eric defeated Bloodaxe, only to discover that Bloodaxe was actually Jackie Lukus, his love interest at the time.
Final conflicts and death After a confrontation with
Seth the Egyptian god of death, Eric realized that the only way to defeat him was to succumb to the curse contained with the Bloodaxe and increase his strength. After his supposed slaying of Seth, Eric was confronted by the
Avengers, who attempted to arrest him for murder. Instead, Masterson defeated the Avengers, and Thor confronted him. Eric pleaded with Thor to kill him to prevent the curse of the Bloodaxe from taking him over completely. But Eric was eventually forced to fight the Bloodaxe subconsciously, which manifested in Eric's mind in the form of
Skurge. Eric eventually defeated the Skurge duplicate, causing a psychic backlash that killed him and destroyed the two weapons, the Bloodaxe and Thunderstrike. Claiming that
Valhalla was not where he belonged, Eric was sent into the afterlife by Odin.
Returns from and to the dead Eric was temporarily resurrected by the
Grim Reaper several years later, along with several other deceased Avengers. After overcoming the Grim Reaper's control, he and the other undead Avengers were returned to the afterlife by the
Scarlet Witch. Before he returned to the afterlife, Eric asked Thor to check in on his son Kevin for him.
Kevin Masterson Kevin Masterson (Eric Masterson's son) first appeared in
Thor #392 (June 1988). An embittered adolescent, Kevin is featured in the 2011
Thunderstrike limited series. The character previously featured as an idealistic child is shown to have anger, behavioral problems, and disillusioned outlook on "spandex-covered glory hounds." He is given his father's enchanted mace by
Commander Steve Rogers but, to their mutual disappointment, it doesn't trigger a transformation into Thunderstrike. On his way home, however, Kevin tries to save a mother and child from a rampaging
Rhino and is transformed. Kevin briefly battles the Rhino as Thunderstrike, but, shortly after he is defeated, he realizes that he is actually in his father's body.
Mangog, a foe of Thor, resurfaces and threatens
New York City. The young hero teams with Thor, to battle the monster. Kevin accepts his new identity as Thunderstrike, along with a new image, and continues his adventures under the mentorship of the
Valkyrie Gruenhilda. During the
Fear Itself storyline, Thunderstrike ends up teleported onto a station in the middle of the Pacific Ocean with
Amadeus Cho,
X-23,
Spider-Girl, and
Power Man. They end up fighting a bunch of samurai Shark Men. Kevin briefly appeared as part of the new class of students when the
Avengers Academy moves to the former headquarters of the
West Coast Avengers. He later joins the
Asgardians of the Galaxy. In the
Marvel Comics 2 alternative universe, Kevin Masterson is a founding member of
A-Next after absorbing the powers of the Thuderstrike mace. When
Galactus destroys
Asgard, Thunderstrike seemingly loses his powers in
Last Planet Standing. He is kidnapped by Ulik and Sylene, daughter of Loki, as part of a plan to restore Asgard; but Kevin Masterson struggles against his captors. Ultimately he is responsible for turning the tables on the villains.
Thena, daughter of Thor, who had also taken part in the battle against her cousin, is able to restore Kevin's power, allowing him to become Thunderstrike once again. ==Powers and abilities==