We're Not Sure About Knuckles, But Eggman Is Adorable.

Hurrah.

Amazingly, this costume pack looks rather awesome, with Dr. Robotnick (Eggman) proving to be the pick of the bunch as far as we're concerned. No word on a price or date yet, just know, Sonic (and unfortunately friends) are heading to a LittleBigPlanet near you.