SnowAgumon may have never actually been involved in the Great Beginning, but it's mere relationship to the normal Agumon is enough to put it in the same legendary status it has. SnowAgumon looks entirely different from Agumon and BlackAgumon, having a large coat of white fur and walking on all fours, as well as having a set of saber-like teeth.
Digimon World: Bronze and Cobalt
SnowAgumon's part of the Botamon line tend to appear commonly during The Grand One quest line, in which the final part of the quest line takes place in a snow covered location. SnowAgumon digivolves from Koromon at Level 8 with 40 Aquan Exp and into WinterGreymon at Level 18 with 200 Aquan Exp or into WinterGeoGreymon at Level 20 with 300 Aquan Exp.