Gotta say, out of the games you mentioned I only remember Sonic (because I loved Sonic in me younger days). They had a comic book back then that I used to buy religiously, and fairly recently (within the last 5 years) they had a Sonic show, but it wasn't very old school. It included Shadow (an antagonist for the gamecube), Maria, some other scientist/doctor guy and some others that I wasn't familiar with.
I still buy Sonic comics sometimes, but otherwise, the games are dead to me.
FYI Knuckles>all.