Dark Shadow Spyro, form 2.
Dark Demon Spyro is basically a Dark Spyro upgraded by the hatred and malice of Mirage to create her own counterpart to Avatar Cynder. It is however a currently canceled character due to simularity conplaints to another idea a user made. It was originally set to first appear in The Secret of Nimh II where Mirage's voice convinces Spyro to first become Dark Spyro, and then into this form to destroy Fake Martin. In this form, Spyro is near unstoppable, and only Sora and Kairi's combined keyblade light attacks can destroy it, exorcising Spyro from the demonic creature, and then trapping it forever in a ghostbuster trap so that no one can use it again for evil.
Dark Spyro form 1