A remix of this track was created for the Octo Expansion with a more complicated sound. Although very similar, there is additional underlying background production, for a deeper, more complex sound. It is only heard after the introduction of the Octo Expansion where Agent 8 meets Cap'n Cuttlefish for the first time during the cutscene in the Abandoned Station, in a similar way to Agent 3's initial encounter. It transitions to Player Editor when the player is asked to customize Agent 8's appearance, but switches back once finished. The theme continues playing until the player enters and travels inside the abandoned train when it gradually fades away and is replaced by the Abandoned Station Theme. In Octotune, it is merged with the Player Editor theme, to create one music file as Cap'n Cuttlefish's Theme (Octo) ~ Player Editor.
In Splatoon 3's single-player campaign Return of the Mammalians, a remix of Cap'n Cuttlefish's Theme plays when Cuttlefish is revived. It is in a much higher pitch than the other versions of this song and is slightly off-tune.