Birdramon

Birdramon is Champion form of Biyomon.

Digimon Adventure
In Biyomon Gets Firepower,

In Ikkakumon's Harpoon Torpedo,

In Evil Shows His Face,

In The Dancing Digimon,

In DigiBaby Boom,

In The Legend of the DigiDestined,

In The Arrival of SkullGreymon,

In The Crest of Sincerity,

In The Prisoner of the Pyramid,

In The Earthquake of MetalGreymon,

In Sora's Crest of Love,

In Return to Highton View Terrace,

In Gatomon Comes Calling,

In Flower Power,

In City Under Siege,

In The Battle for Earth,

In Enter The Dark Masters,

In Under Pressure,

In Playing Games,

In Ogremon's Honor,

In The Crest of Light,

In Joe's Battle,

In The Crest of Friendship,

In Now Apocalymon,

Digimon Adventure 02
In The Good, the Bad, and the Digi,

In A Very Digi-Christmas,

Loss
Biyomon digivolve to Birdramon and then again to digivolve to Garudamon.