he got many forms e.g. super sonic, dark sonic, dark spine sonic
Fleet way sonic is only in the western sonic comics. He is an evil form of super sonic when sonic has to much power or is under high stress.After fleet way sonic is done defeating a enemy he attacks his freinds.Fleetway sonic got separated from sonic and then got trapped in a magical mirrior.After fleet way got out he lost his membory.
Sonic the Hedgehog got his name from his grandfathers ( Later on his name was changed to "sonic".)
I very much doubt it, as not many people enjoyed Sonic Underground, which is why it got cancelled.
in sonic x he got a cold.
hyper sonic
Hyper sonic is stronger since he got the power of the chaos emeralds and some from the master emerald. Dark sonic, however, comes from the negatives energies in the chaos emeralds, and is some weaker than normal Super sonic.
no...but sonic can fly when he is in his super form
but has only super form and hyper form in other words super sonic and hyper sonic
No only Super Sonic is an available alternate form for Sonic.
Sonic firewall is sonic in his fire form and a virus on a computer
Sonic was born with his powers.
Assuming you mean a super form called Ultra Sonic, No