Spyro Orange: The Cortex Conspiracy

Doctor Neo Cortex and Ripto join forces to rid themselves of their respective adversaries Crash Bandicoot and Spyro the Dragon by genetically modifying Ripto's "Riptoc" minions and disguising them as Crash and Spyro, leading the two protagonists to believe they are against each other. Crash and Spyro are alerted of their respective worlds' predicament and are sent to get rid of the disguised Riptocs. (wiki)