Chip gets sealed within the Earth along with Dark Gaia, and it is assumed that he goes back to sleep until it is time to return the Earth to normal after Dark Gaia's next awakening. His necklace is the only tangible remnant left of him that Sonic was seen wearing on his wrist at the end of the game.
Chat with our AI personalities
Chip learns his name which is Light Gaia. He helps sonic beat dark Gaia, they win(of course) and chip and sonic go separate ways
I believe he hasn't liked anyone in the games, thus far. Especially in Unleashed, where his only real companion is Chip.
I would say he's a flying chihuahua.
unleashed
Yes, there are Sonic games after Sonic Unleashed. At the time of writing, the latest will be Sonic Generations.