▁wave ▁of ▁an em oi ▁th uel la i ▁were ▁born . ▁ ▁Un ic orn ▁– ▁A ▁horse ▁with ▁one ▁horn . ▁A ▁her d ▁of ▁Un ic orn s ▁are ▁used ▁as ▁ste eds ▁for ▁the ▁camp ers ▁of ▁Camp ▁Jup iter . ▁A ▁red - t int ed ▁L ares ▁with ▁the ▁head ▁of ▁a ▁w olf ▁gu ards ▁them . ▁ ▁B uster ▁- ▁A ▁un ic orn ▁that ▁lives ▁in ▁Camp ▁Jup iter . ▁In ▁" The ▁T yr ant ' s ▁T omb ," ▁Meg ▁and ▁P ran ja i ▁use ▁his ▁horn ▁sh av ings ▁to ▁tend ▁to ▁the ▁scr ath ▁on ▁Apol lo ' s ▁st om ach . ▁He ▁later ▁joins ▁the ▁other ▁un ic orn s ▁in ▁fighting ▁the ▁inv ading ▁z omb ies ▁during ▁the ▁second ▁wave ▁of ▁Cal ig ula ' s ▁Ass ault ▁on ▁Camp ▁Jup iter . ▁ ▁Hor atio ▁- ▁A ▁un ic orn ▁that ▁lives ▁in ▁Camp ▁Jup iter . ▁In ▁" The ▁T yr ant ' s ▁T omb ," ▁Hor atio ▁is ▁among ▁the ▁un ic orn s ▁that ▁fight ▁Tar quin ' s ▁army ▁during ▁the ▁Battle ▁of ▁San ▁Francisco ▁Bay . ▁ ▁M uff in ▁- ▁A ▁un ic orn ▁that ▁lives ▁in ▁Camp ▁Jup iter . ▁In ▁" The ▁T yr ant ' s ▁T omb ," ▁M uff in ▁is ▁among ▁the ▁un ic orn s ▁that ▁fight ▁Tar quin ' s ▁army ▁during ▁the ▁Battle ▁of ▁San ▁Francisco ▁Bay .