Mata Nui was once a biological brother, friend and currently an enemy of Teridax. When Mata Nui descended into the Matoran Universe, he was greeted by Teridax for the first time and the two of them
Prior of becoming evil, Teridax was once Makuta Miserix's trusted lieutenant. He was also greatly loyal and devoted towards him as he received orders from Miserix with trust and devotion. However when Teridax demanded a
Icarax was Teridax's comrade. Both of them were once worked together to serve both Miserix and the Great Spirit. Icarax was also seen accompaning Teridax whenever he goes.