Sonic heroes 2
Sonic Heroes 2 takes place 2 years after the events in Sonic Unleashed and 4 years after the events in Sonic X. There are 6 teams, 2 more than Sonic Heroes, and each team has 3 rival teams. These are the Teams;
Team Sonic Speed-Sonic the Hedgehog Fly-Miles"Tails"Prower Power-Knuckles the Echidna
Team Dark Speed-Shadow the Hedgehog Fly-Rouge the Bat Power-E-123 Omega
Team Rose Speed-Amy Rose Fly-Cream the Rabbit & Cheese the Chao Power-Cosmo the Seedrian
Team Chaotix Speed-Espio the Chamelion Fly-Charmy the Bee Power-Vector the Crocodile
Here are the new teams;
Team Babylon Speed-Jet the Hawk Fly-Wave the Swallow Power-Storm the Albatross
Team Future Speed-Blaze the Cat Fly-Silver the Hedgehog Power-Chip the Dog
These are the teams rivals (Must face one at the beggining of each story)in order;
Team Sonic-Babylon, Rose, Dark
Team Dark-Future, Chaotix, Sonic
Team Rose-Chaotix, Sonic, Future
Team Chaotix-Rose, Dark, Babylon
Team Babylon-Sonic, Future, Chaotix
Team Future-Dark, Babylon, Rose
This is the final boss team (each team has to face this team once except Team Sonic who has to face this team twice. once as normal & once in Hyper Mode)
Team Metal Sonic Speed-Metal Sonic Fly-Tails Doll Power-Metal Knuckles
Plot
Eggman has gathered all 7 Chaos Emeralds and forms an alliance with Eggman Nega who has collected the 7 Sol Emeralds. Eggman has also shattered the Master Emerald and has Chaos under his control. However Team Metal Sonic invades the new Death Egg and steals all 14 Emeralds and drains all of Chaos' power. They then absorb all of the emeralds powers and all of Chaos' Power to make themselves invincible and use that power to throw the planet into a Time-Space Rift. (similar to the one in Pokemon The Rise of Darkrai)
Sonic sees this and decides to find the source of this Rift. He finds Tails and Knuckles trying to find out the same thing when they see Team Babylon (also known as the Babylon Rogues) and Jet challenges Sonic to a battle,not a race, a battle which Sonic happly accepts. Him, Tails, and Knuckles decide to team and face Team Babylon.
Before the Rift appeared, Amy was looking for Sonic as usual and she sees Cream. but before Amy goes over to see her,Cream's friend Cheese gets blown away by sudden gust of wind. Cheese is saved by a mysterious girl and as Cream thanks her, Amy finds out that the girl is Cosmo. Apparently Cosmo came back and is looking for Tails. When her, Amy, and Cream decide to form Team Rose and look for Team Sonic, they get caught in the Time-Space blast caused by Team Metal Sonic. They then find themselves on Angel Island along with Team Chaotix who were on a mission to find Tails and bring him to Green Hill Zone (later it is revealed that Cosmo sent them a letter explaining the mission that they have)Vector thinks that Team Rose has something to do with this and convinces Charmy and Espio to attack. A fight starts there.
When the blast hit, Shadow, Rouge, and E-123 Omega were on a mission in the core of the Planet. When they get there, they find Silver who is investigating the source of a space distortion which was the same thing that Team Dark was sent to investigate. A portal appears and Blaze comes out of it. Silver is happy to see Blaze again but when Team Dark comes down to fight them cause of Shadow's impatience, Metal sonic appears as Neo Metal Sonic and uses his power to summon Dark Gaia. Then Chip appears in the Gaia Collosus to fight Dark Gaia but Neo Metal Sonic destroys the collosus and Chip teams with Blaze and Silver to fight Dark Gaia and form Team Future. However Shadow still wants to fight and now he wants to fight Dark Gaia which results in a Triple Threat Battle between Team Dark, Team Future, and Dark Gaia