Garudamon

Garudamon is Ultimate form of Biyomon.

Digimon Adventure
In Sora's Crest of Love,

In Return to Highton View Terrace,

 In  City Under Siege,

In Wizardmon's Gift,

In The Battle for Earth,

In Enter The Dark Masters,

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 3,

In Invasion of the Daemon Corps,

Loss
Birdramon digivolve to Garudamon and then digivole again to Hououmon.