Clank, originally going by XJ-0461, is a Zoni created AI native to the Zi'yuij Universes known for his heroics that he accomplish with his best friend Ratchet.
Originally created by the Zoni leader Orvus in the Great Clock but constructed in a Blarg robot factory on Quartu as a sentry-bot but created defected and shortly after acquired a infobot and learned about Chairman Drek's plans and stole a ship to try and stop him but crashlanding on Veldin, Ratchet's homeworld and where the two met and became lifelong friends which is reinforced over the decades on many galaxy-saving adventures, including defeating Doctor Nefarious multiple times, saving Polaris from the tyranny of Emperor Percival Tachyon and help prevent the collapse of time due to the mislead actions of Alistair.
But it was one of his and Ratchet's most recent adventures, one accidently caused by him in a effort to help reunite his best friend with his species leading to Nefarious, Ratchet and Clank to travel to multiple universes which ultimately cumulated in the defeat and death of Emperor Nefarious from the universe they ultimately ended up in, and the home universe of Rivet and Kit, that lead them being discovered by the wider multiverse, as it was dragged into a brutal multiple universe spanning war forcing Ratchet, Clank, Rivet and Kit to fight against the invading Axis and joined the Alliance.