Splatoon 3: Side Order is a 2024 expansion pack for Splatoon 3, a 2022 third-person shooter video game, developed by Nintendo EPD and published by Nintendo for the Nintendo Switch. Announced in February 2023, Side Order is the second part of the Splatoon 3 Expansion Pass. It was released on 22 February 2024.

Pearl and Marina are a duo of characters from the Splatoon video game series. They were first introduced in Splatoon 2 (2017) as members of a pop music act known as Off the Hook , who perform a variety of songs which is utilized as in-game music. The characters are also used by the developers to convey content updates and announcements to players of Splatoon 2.