I.R.I.S. (acronym for Integrated Reconfigurable Intelligence System) was an artificial intelligence designed by Noriko Null and in charge of maintenance of Null Tower. I.R.I.S. was capable of independent thought and able to provide suggestions without receiving a question.
Since it was integrated into the first Null Tower, it was lost in the Null Zone when the building was trapped there.
First appereance: Beyond The Impossible #19