Sonic X meets Final Fantasy VII

Sonic X meets Final Fantasy VII is the Fan-made Crossover Anime Series. It was made by Sega and Squaresoft. The Crossover Story involves the legendary Sonic the Hedgehog meeting Cloud Strife, who is hired by the eco-terrorist group AVALANCHE—led by Barret Wallace—to help fight the mega-corporation Shinra Electric Power Company, who attempts to drain the planet's lifeblood as an energy source to further their profits.