1991 i think
Yes, Sonic Heroes was released for the PC along with the PS2, XBox, and GameCube.
Yes it is and it was released November 1, 2011 as a 3D compatible PS3 game
yes
Yes. Sonic the Hedgehog The Movie was released in 1996, and that was the beginning of the series about Sonic.
Yes, there is a Sonic the Hedgehog 3. It was released in 1994 and it had an expansion / sequel in Sonic 3 & Knuckles.
Yes, in fact, Sonic came out June 23, 1991.
Yes
Adventures of Sonic the Hedgehog - 1993 Untouchable Sonic 1-44 was released on: USA: 1 November 1993
Sonic the Hedgehog - 1993 Sonic Boom 1-1 was released on: USA: 18 September 1993 Brazil: 6 September 1994
yes watch sonic underground ep. 1
Sonic the Hedgehog - 1993 Sonic Racer 1-6 was released on: USA: 23 October 1993
Sonic the Hedgehog - 1993 Warp Sonic 1-10 was released on: USA: 20 November 1993