Enemy units that are in base contact with a Kharibdyss must re-roll successful Leadership tests. This has no effect on models that have Immunity (Fear/Terror/Psychology).
Source: Warhammer Armies Project: Unofficial 9th Edition
Enemy units that are in base contact with a Kharibdyss must re-roll successful Leadership tests. This has no effect on models that have Immunity (Fear/Terror/Psychology).