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Vs. Ridley is the name of Ridley's signature battle music that has been associated with him since Super Metroid and is present in all games except Metroid and those he doesn't appear in. Every variation features new notes and sounds, but are always consistent with the original.
A full list of themes can be heard below:
- Super Metroid - The original theme, used for Ridley, Draygon and both forms of Torizo. Heard here: . Also used as the escape theme for both Ceres Station and Zebes, albeit with an additional alarm wail added for obvious reasons. Heard here: .
- Metroid Fusion - Features a slower paced arrangement for Neo-Ridley and a faster paced version for the escape theme. Heard here:  and here: . One of the unused tracks present in the game is yet another variant on the theme, but in a regular meter.
- Metroid Prime - The theme was remixed into Vs. Meta Ridley, which was also featured in Metroid Prime 3: Corruption, Metroid Prime Pinball, Metroid Prime Hunters: First Hunt and Super Smash Bros. Brawl.
- Metroid: Zero Mission - One remix is used while fighting Ridley , while another is used while fighting Ridley Robot .
- Metroid Prime Pinball - Contains a remix of the Meta Ridley theme, heard here: .
- Metroid Prime Hunters: First Hunt - Contains an arrangement of the Meta Ridley theme as well, despite his absence in the game.
- Metroid Prime 3: Corruption - Aside from the Meta Ridley theme, a new remix is featured for the Omega Ridley battle.
- Super Smash Bros. Brawl - Contains this and a metal remix of the original Ridley theme, heard here: . This song is played on Frigate Orpheon (Stage) as well as an event on Norfair (Stage). It also was played for both Ridley boss fights (regular and Meta Ridley) in Subspace Emissionary.
- Metroid: Other M - An orchestrated version of the theme was heard in the Action Story trailer released on July 27, 2010. It also plays during the battle with Ridley and when Samus escapes from Sector Zero and the BOTTLE SHIP, and on the Geothermal Power Plant stage in Dead or Alive: Dimensions. 
- Jam With the Band - In the instrument trivia, Vs. Ridley is played to demonstrate the synth bass.
- Nintendo Land - The minigame Metroid Blast has an orchestrated remix of the Ridley theme, it plays on stages where Miis must fight against Ridley as a boss: .
- Super Smash Bros. for Wii U - The Brawl theme and Vs. Meta Ridley return, in addition to the Other M version, which is called Nemesis Ridley. All three play on Pyrosphere.
- Samus Archives Sound Selection - Nemesis Ridley (simply referred to as Ridley) is one of the tracks included with this CD, which comes with the Special Edition of Metroid: Samus Returns.
- "MusicSelectionOmegaPirate MusicSelectionPrime2 MusicSelectionRidley" are listed in the original data of Metroid Prime 2: Echoes Multiplayer songs.
Little birdie • Mystery Creature • Neo-Ridley • Fake Ridley • Ridley-2
Ultrathermal Flamestrike Projector
Multi-Missile System • Phazon-enhanced armorskin
Vs. Meta Ridley/Meta Ridley • Omega Ridley