User blog comment:Mckrongs/Extreme Individuals/@comment-6050823-20180409103135/@comment-6050823-20180410030821

We just generally call them "Peerless Monsters" because of the type quests they appear in. They're easily the strongest monsters in Frontier right now, though only appear for a limited time, they're kinda like an event quest.

Here's all of their names (Note: We usually don't include the extreme part because its makes their names pretty long);
 * 渇喰パリアプリア (Pariapuria)
 * 極み吼えるジンオウガ (Zinogre) - Howling Zinogre
 * 妖し化けるミ・ル (Mi Ru) - Shapeshifting Mi Ru
 * 極み統べるグァンゾルム (Guanzorumu) - Ruling (Ruler works too) Guanzorumu
 * 極み駆けるナルガクルガ (Nargacuga) - Twinkling/Sparkling/etc Nargacuga
 * 極み傲るドゥレムディラ (Duremudira) - Arrogant Duremudira
 * 極み灼き凍るエルゼリオン (Eruzerion) - Burning Freeze Eruzerion