There was a topic a while ago that asked this, prior to extremely hard difficulty in some exploration modes, like Tokyo. But I'm wondering, will ARKS Rappies spawn in Omega Forest or Tokyo Exploration? If so, will they drop Rappy eggs if I set the difficulty to level 75+ enemies?
or will I have to wait for Trick or Treat and/or do Ultimate Quests (Which apparently spawn Level 80 enemies. Despite the item log not showing Rappy Eggs.)