Zudomon

Zudomon is Ultimate form of Gomamon.

Digimon Adventure
In City Under Siege,

In Wizardmon's Gift,

In Enter The Dark Masters,

In Sea-Sick and Tired,

In  Under Pressure,

In Etemon's Comeback Tour,

In Ogremon's Honor,

In Piedmon's Last Jest,

In Now Apocalymon,

In The Fate of Two Worlds,

Digimon Adventure 02
In Digimon World Tour, Part 2,

In Invasion of the Daemon Corps,