During Story 1: The Origins, Pete Porkins gains his slug-powers for the first time. The story begins with Pete Porkins being tracked down by Snail Boy and convinced to take him on as a partner (Thereby beginning the Slime Squad), before Pete recounts the story of his creation, beginning five years earlier. Slug-Man's involvement with Bio-Slime Corps and his first involvement and later membership of the UNWD is shown, with his first mission for them, featuring Bill Large, Dr Cobra and Eye-Scar Guy.
Story 2: The Middle of the Beginning charts the events taking place immediately after Slug-Man's membership of the UNWD, with Jonah Gordonson showing him The Nest and introducing many other heroes before the Battle of London started by the Zopran robot/aliens.
The Slug-Man comics centre around Slug-Man/ Pete Porkins and first few battles. Introduced for the first time during these comics are: