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 (テンタクルズ, Tentakuruzu, "Tentacles" in Japanese), . 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. . Pearl and Marina are voiced by voice actresses Rina Itou and Alice Peralta, respectively.
https://en.wikipedia.org/wiki/Pearl_and_Marina