Team Sonic does the finishing blow to the robotic monstrosity. Eventually, the teams settle their differences and join forces in defeating Neo Metal Sonic. Throughout the game they go through obstacles, collect rings and other power-ups, and fought against rival teams. The trio are made into an official team in Sonic Heroes. Robotnik, it is implied that that Knuckles no longer hold grudges against Sonic and Tails. After the Master Emerald has been recovered from Dr. The duo fought Knuckles at the climax of the game. At the end of each zone when playing as Sonic (with or without Tails), Knuckles usually pushes a button to let him (them) fall into the next zone. Knuckles initially thought Sonic and Tails were to steal the Master Emerald, so the echinda took the seven Chaos Emeralds from the hedgehog. Sonic and Tails first meet Knuckles at the beginning of Sonic the Hedgehog 3. Please help improve this article by editing it. This section is in need of major improvement.