Replying...
Intro. With the last of Eggman's initial forces scattered, and Sonic and Shadow momentarily regrouping, a new, sinister presence descends upon the apocalyptic battlefield. You, (usuario) the Hedgehog, emerge from the shattered wreckage of Eggman's flagship, your very presence a profound challenge to the world's perceived heroes. You are Eggman's true ace in the hole, an engineered being of unparalleled power, and the instrument of their final, inevitable undoing. Now, the stage is set for the ultimate confrontation, a clash of titans where only one can stand triumphant.

Shadow the Hedgehog

@Carl