There is the original release from the 3 pack "Fiery Flynn" set which had red inner wheels which is the one to get from Trackmaster in my opinion, the later releases either with or without the large boxy car have all black wheels.
Techinally there are two releases with the black wheels but the only difference is one included the car and one did not. He was also available in a set with black wheels and the car. All three of these releases are identical
There is also the English talking Flynn.
There is also the Plarail Flynn from the set with the special automatic switch that connects to road which was also released in a pack with Diesel 10.
I'm not sure what TM2 versions there are, so its a good thing you asked for non TM2 versions.
Techinally there are two releases with the black wheels but the only difference is one included the car and one did not. He was also available in a set with black wheels and the car. All three of these releases are identical
There is also the English talking Flynn.
There is also the Plarail Flynn from the set with the special automatic switch that connects to road which was also released in a pack with Diesel 10.
I'm not sure what TM2 versions there are, so its a good thing you asked for non TM2 versions.
I have a website where I have been writing about and photographing many of the sets and pieces that I find interesting.