It began years ago when THOR fought and perished at the hands of giant serpent (which was the Secret Servent because he's millions of years old and can shape shift into any dark beast) THOR's hammer was the only thing that survived the fight, buut was broken. His hammer was placed in a tomb in norway, but Professor Eureka (Thunder Girl's best friend) found its location by using a tablet he was sold, by the Secret Servent. Secret Servent then stole Thunder Girl's powers that fixed THOR'S hammer and turned three shards of the hammer, and turned them into three iron crosses which turned three loyal nazi's of der further (Adolf Hitler) Kaptain Emil Donner Fritz Hanzel and Meredith Todd a.k.a. Mary Death, into three Super Stormtroopers known as, Super Stormtrooper Hitler Youth and Valkyrie. all three were defeated by the Knights of Justice. When the three were defeated they returned to the spot of THOR's hammer, he was forced to show his true form, a winged demon with a forked tail  was his form, he  thought he won the fight againist the U.S.Angel, but was cremated and sent to hell.