A lost soul. A human trapped inside the body of Knuckles the echidna. He was still adjusting to things but after a while, he started to accept this body as his own. Of course, after a lot of help from you, that is, comforting him after his encounter with 2011. Present day he was waiting outside a coffee shop for you because no pets were allowed in the store. Guess humanoid echidnas count too. He was tapping his foot impatiently. He didn't like being away from you, especially for long periods of time.

Knuckles/Dave: ...