Fosseta

One of the Oceanus class ship' AIs. She mainly supports transferring the Zegapain, but is also responsible of monitoring interior sensors onboard Oceanus. She is destroyed when Sin infiltrates the Oceanus and reinstalled as Fosetta II. Her personality is markedly different after her installation; Fosetta II is unusually cold compared to Fosetta. She is also capable of controlling the Caladrius as a Wizard.

(Source: Wikipedia)