Hyper Sonic is a more advanced version of Super Sonic, that was only ever in one Sonic game: Sonic 3 & Knuckles for the Genesis, he is not in Sonic Riders or any other Sonic game. As for Super Sonic, you can only get him in Sonic Riders by completing all missions with a gold rank. *trust me it's not worth it, way too much work for the reward*
No only Super Sonic is an available alternate form for Sonic.
Sonic riders, Sonic Riders: Zero Gravity and Sonic Free Riders already exist.
Sonic Free Riders is the third instalment in the Sonic Riders series.
sonic riders: free riders
No, you can not by Hyper Sonic in Sonic Rush. For Sonic to go Hyper, he needs the 7 Super Emeralds, which Sonic Rush does not have. The Super Emeralds were only in Sonic 3 & Knuckles, so Sonic can only go hyper in Sonic 3 & Knuckles.
Sonic Riders Extreme is an unconfirmed game at this stage.
Hyper sonic was never shown in sonic x it was just for the game
No, but he is in Sonic Riders: Zero Gravity.
Sonic Riders happened in 2006.
There has already been a Sonic Riders 3. It's called Sonic Free Riders.
It is not known as of yet if there will be another game in the Sonic Riders series.
He's not in the original Sonic riders or the 2nd one, but he IS in Free Riders. I hope this helped!