So, seeing as this is the Bionicle category, I'll keep it limited to my Bionicle-universe characters.
The first character is Junkier. He is a cybernetic, colorful mechanoid who was once vortixx. He can transfer his consciousness into other mechanical objects at will, and is a master at many forms of experimental science. With this ability, he has been able to create properly functioning facsimiles of:
-Several Makuta Viruses
The next is Viradox. Viradox is a Makuta created from remaining samples of the original Primordial antidermis pool. Junkier, using his mastery in science, was able to create Viradox, as well as his four subordinates(Razira, Blacklight, Thenrus, and Nevuruk).
Viradox is a masterful leader on the battlefield, as well as an ambitious schemer, and a powerhouse on top of all that. His power and charisma combined lead to him gaining an entire army of Skrall, other Spherus Magna natives, Skakdi, Steltian Brutes and Elites, among other species, and a hexagonal fortress named after himself, inside the massive remaining desert of Spherus Magna. If his charisma doesn't work, however, he always has his Kanohi Avsa to fall back on.
The third extremely stroink character is Terrick. Terrick was another of the 6 Makuta created by Junkier. He was the first. However, due to carelessness and being distracted, Junkier did not properly contain him in the lab, and so Terrick's(at the time still hardly sentient) body escaped the underground facility. His development, through sheer stupidity and blissful unawareness led him to a path not obstructed by darkness and shadow powers. Instead, the good in his heart took development first, causing him to have light powers and the more heroic Kraata Powers.
He doesn't know any of this though. For the body he had looked like nothing more than a slightly taller, slender, green Toa. From there, he met Clire, a random Ga-Matoran who he befriended. She believes, and has told him, that he is a Toa. Through this faulty belief that he's a Toa of Air, Terrick has only control and awareness of his Cyclone Kraata powers.
Terrick has never been stressed. Were he under pressure, and attempted to instinctively save himself, his light powers would reveal themselves. As of now: They have not.
The fourth character that is 3stroink prolly shouldn't count. Some backstory is required: Terrick and his newfound(at the time) friends, Nyran, Solinari, Nerai, Jalis, and Baronon, have finally stormed Castle Viradox, and now desire to take out the would-be conqueror.
Viradox has also amassed a large pool of Energized Protodermis(as it was restored to the planet upon the reformation). In the struggle, a last ditch effort to take out the flying monster Viradox had become, Terrick throws his weapon(The White Spear) at Viradox. The dragonic stingray falls and crashes right into Terrick, and knocks them both into the drink. The Energized Protodermis consumes them both, and emerging from it is a blue and green creature with the wings and claws of Viradox, the armor of Terrick, and a monstrous mask with the shape of the Avsa on its upper half, but the mouthplate and spikes of the Kualsi.
The resulting mishmash is Teridox. A name chosen by the lost and confused monstrosity out of the bits and pieces of the two's memories attempting to clash and gain control. In the end though, Viradox wins the struggle. In a way. For, while Teridox has his own consciousness, through the power of an artifact Viradox had while he fell in, that consciousness is firmly on the side of conquering and darkness.
Regardless of this, however, Teridox has access to all the powers Terrick had(and didn't know about). Making him a totally evil, insane, and dangerous madman with mastery of light and shadow, and still the command of Viradox's army.