Agumon (Survive)

Agumon is Takuma Momozuka's Partner Digimon.

Koromon
Koromon is Agumon's In-Training form.

On the second day of their historical studies extracurricular activities camp, Takuma, Minoru Hyuga and Aoi Shibuya visit a famous local temple, to investigate the legend of the "Beast Gods" (Kemonogami) where a festival to celebrate them will take place. As they explore, they come across Koromon, then hear screaming. Koromon and the group run to the source and find their classmates being attacked by other Digimon. Koromon digivolves to Agumon and scares the Digimon away. It is at this point, that Takuma and the others discover they are in another world.

Greymon
Greymon is Agumon's Champion form.

MetalGreymon
 is one of Agumon's Ultimate form.