Sirenmon is a God Man Digimon whose name and design are derived from the mythological siren. It has an outward appearance like a blending of bird and fish, its personality is cheerful, and it is always singing pleasant songs throughout the skies and seas as a member of the same musical troupe as Aegiomon. Its voice has a miraculously sweet sound and actually has an eight octave range from very high notes to very low notes, and it brings tranquility even to devastated battlefields with its singing voice. It is said that by healing its listeners and performing good deeds, it will continue on to a shining digivolution. Each of its techniques has the characteristic of increasing in power if there are others singing alongside Sirenmon, corresponding to their quantity. Even the weak gain great power by singing in chorus with Sirenmon.
- Dai'ichikyoku (Polyphony) (第一曲≪ポリフォニー≫ Dai'ichikyoku (Porifonī)?, lit. "No.1 (Polyphony)"): Sings a song in a high soprano, whose notes suffuse the listener's heart and numb their free will, leaving them at Sirenmon's mercy.
- Dainikyoku (Aria) (第二曲≪アリア≫? lit. "No.2 (Aria)"): Sings a solemn song in a low bass, which becomes a deep bass frequency wave that flattens the enemy through their semicircular canals, so that they are unable to even stand.
- Daisankyoku (Canon) (第三曲≪カノン≫ Daisankyoku (Kanon)?, lit. "No.3 (Canon)"): Attacks the enemy using its singing voice as note-shaped shots, which are said to have the marvelous trait of ricocheting to always strike their targets, even separate enemies.