ThunderStriker2001
When Dr Robotnik aka Eggman discovers the ISO-8 crystals, made after the destruction of the Infinity Stones from the Great Infinity War, he seeks to turn his dream of an Eggman Empire into a theme park entertainment entrepreneur, but when an evil robot called the Death Egg Emperor, with Dr. Eggman's evil personality, seeks to conquer both Earth and Möbius, Spider-Man and Sonic the Hedgehog must unite against this threat in order to save both their worlds from Certain Doom.
Disclaimer 1: I do not own Spider-Man, Sonic the Hedgehog, Dragon Ball Kai/Super, or RWBY. Spider-Man belongs to Marvel Studios, Sonic the Hedgehog belongs to SEGA and Sonic Team, Dragon Ball belongs to Shonen JUMP, Funimation, Toei Entertainment, and Akira Toriyama, and RWBY belongs to ViZ Media (formerly Rooster Teeth) and Monty Oum. Please support the official releases.
Disclaimer 2: This is my take on the United Heroes FanFiction story involving Spider-Man, Sonic the Hedgehog, and RWBY with Dragon Ball Kai/Super joining the roster as well as some OCs that I have but will be revealed in a sequel to this story as well as the big story that unites the heroes into one story as it also takes place in the Marvel Cinematic Universe with the Infinity War resulting in the victory of the Avengers and the destruction of the Infinity Stones into a new type of crystal entering Sonic the Hedgehog, Dragon Ball, and RWBY and any constructive criticism is appreciated but keep it positive.
Reader's discretion is advised.