The R.Y.N.O.m is a weapon in Before the Nexus. It is part of the R.Y.N.O. series and the most powerful weapon in the game. It is obtained by rescuing all ten terachnoids. Its appearance and functionality is identical to the RYNO V, and likewise is a powerful combination of a minigun and missile launcher, albeit with a more simplified effect due to the platform's limitations. It is capable of destroying any normal enemy instantly, and can also defeat the Prog twins' airship very quickly.
Ratchet & Clank Wiki