Sonic turns him down so Eggman casts Dave the Intern for the role instead .
After Sonic interrupts Eggman directing a film detailing his and Sonic 's rivalry , he offers to let Sonic play himself .
Sonic turns Eggman down so Eggman casts Dave the Intern for the role instead .
After Sonic interrupts Eggman directing a film detailing his and Sonic 's rivalry , he offers to let Sonic play himself .