L.O.K.I. (acronym for Local Over-Kernel Intelligence) is an artificial intelligence designed by Noriko Null, in charge operating the Ragnarok.
Its visual interface is a hologram of two snakes wrapped around each other.

L.O.K.I. went above and beyond its original programming to rescue the Vanguard from Viper.
It was later hijacked by a rogue A.I. created by Diomedes but was later regurned to its original programming.