Team Sonic (boss)

This article explains how to defeat Team Sonic in Team Rose and Team Dark  cases in Sonic Heroes.

Team Rose
The object of the battle is simple. Knock the other team off the ledge to win. Start by grabbing the blue Power core in the center, so Sonic can’t use it. Then when the other team is near Amy, use Tornado Hammer to fling them into the air .While they are grounded you can collect more Power Cores or steal their Rings. If Sonic’s team doesn’t have any Rings it will be easier to knock them off. Also, be sure to look around because there is nothing more annoying than getting hit from behind. This is a fairly easy battle and you should be able to get an A Ranking easily after a couple of tries.

Team Dark
Start the battle by having Shadow use Black Tornado on Team Sonic. This will knock them down temporarily. Switch to Rouge and use Thunder Shoot to collect the Power Cores in the balloons on the side of the arena. Use Thunder Shoot to keep the Team Dark members down. When a member of Team Sonic is downed, switch to Omega or Rouge to knock them off of the edge .Once all three members of the other team are knocked over the edge, the battle is over.