The following is NOT canonized by the TTV. Anything listed serves as potential material for the TTV, if they ever want to use any of it. Anything they reject outright (assuming any of them read this) will be labeled Non-Canon.
Kulta is completely loyal to Makuta. He lived in Takoto and living there, he hated it! He was a liutenant who exposed many secrets to Makuta, he was found out by Umarak, even when he was captured and imprisoned in a cold prison located in Ihu, he never lost faith in Makuta. When he was locked up, the prison he was in froze over, he was accidentaly reawakened by the firespitters during their attack on Ihu
Umarak is not at all loyal to Makuta, his secret idolisation in the previous toa of fire (Lhikan) and his dream of becoming like him only helped him to want to disolution himself with Makuta, due to Lhikan's inspiration he spied on Kulta and found out his secrets, he helped lock up Lhikan but never felt self worth, he is currently roaming Povoya, hoping no one finds him
Souls Of Darkness
Souls Of Darkness were once matoran and possibly even toa before they were hunted to extinction, they are controlled by Makuta, with no free will of their own, they can posses beings and even harness their elements, they cannot however, feel emotions.