Here is a set of 3 pin badges for Sonic Heroes. It's called the "Team Sonic Can Badge Set". (Why 'can'?) Each pin has the Japanese Heroes logo on it & a CG of the character. There's a Tails, Sonic & Knuckles one.
These were a limited-quantity bonus item for the game, part of a bonus called the "Heroes Pack" which also has 3 bags (also seen on SonicGear) which use the sihlouettes of these poses for their design. Because they're limited, they're also uncommon.