Salamon

Salamon is a Beast Digimon. She is known as Protomon in the Japanese version.

First Season (Digimon Adventure)
She appeared as Gatomon before she was found and conditioned by Myotismon. She would later appear once in present time after she exhausted too much power as Angewomon during the fight with VenomMyotismon.

Second Season (Digimon 02)
She only appeared a few times whenever Gatomon lost enough power as Silphymon to maintain her usual form.

Digimon Frontier
She is Ophanimon reborn and only appeared in the 4-part finale of the season. Way before that, a Salamon was seen at the Fortune Teller Village.