Greymon is a Champion Digimon. It digivolves from Agumon and can digivolve into MetalGreymon or SkullGreymon. In the anime Greymon was the first DigiDestined's Digimon to achieve Champion level status.
In the English dub of the Digimon anime Greymon is voiced by Michael Lindsay.
In the English dub version of Digimon: The Movie a different Greymon (A.K.A. Red Greymon) was voiced by Bob Papenbrook.