Kingsley Storme is a historian from the future who arranged it that he could have a time vessel in order to visit the past and meet one of his favorite superheroes of centuries past, the Shield. Shortly after arriving in the past, Kingsley's behavior changed dramatically and he manifested powers to manipulate the weather and engaged the Shield in battle.
Luckily, the Shield was able to defeat the Storm King, but it caused a malevolent being that was possessing Kingsley into releasing him. After he was freed from it's control, Kingsley surmised that the being had attached itself to him while he was traveling through the time vortex and once he arrived into the past, it took possession on him.
Kingley returned to his own time period.