Dr. Robotnik

Thank you, Stone! It's time to say goodbye to this... piece of shiitake planet!
[Robotnik licks Sonic's quill, electrocuting himself again before making a beeline for the ring portal in slow motion. However, he stops at the sight of a silhouette of a creature, then gasps as he stops in his tracks falling on his back as we see the creature's hand, encased in a massive white boxing glove-like with twin spikes. In a close-up of its face, the creature reveals itself to be Knuckles, a red anthropomorphic echidna, marching right up to him with his purple eyes glowing red. He walks up to Robotnik while noticing Sonic's quill in his hand]

Knuckles

Where did you get that?

Robotnik

From a little blue menace on a planet called Earth. [Knuckles looks at him sternly] I'd be happy to show you the way.