From Jen Irwin of Fireball20xl.com:
Ryan Drummond, voice of Sonic The Hedgehog, has reported that Deem Bristow, voice of Dr.Robotnik, has passed on last Saturday night.
A link to the full text of his letter to her follows: http://rotfw.fireball20xl.com/docs/deem.txt
Deem was a superb voice actor, perfectly capturing both the menacing and comedic aspects of everybody’s favorite Eggman onscreen, and a longtime favorite of many fans, including myself. He will be sorely missed by fans, friends, and family.