Dragon Ball Z: Inavsion

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Five years after the defeat of Piccolo Junior at the twenty third World Martial Arts Tournament, peace has returned to the Earth. As those who’d aided in defeating the reincarnation of the Demon King grew complacent as their lives trudged onwards without so much as a counterattack from their Guardian's evil counterpart.

Sadly, it’s an immutable fact of life that nothing gold stays. Twenty six years earlier, the Frieza Force, a galactic superpower ruled by a dictator hellbent on galactic domination, sent an infiltration baby to their planet to wipe out all life on our world. Ironically, the child’s programming was undone by a traumatic brain injury, growing up to become one of the planet's greatest protectors. Meanwhile a Saiyan warrior with ties to the aforementioned adoptive Earthling has been sent by his superiors to retrieve him…In a world with an uncertain future, it is up to you to decide what happens next on Dragon Ball Z: Invasion of the Saiyans!
Make any character relevant!