User may become insane due to the excess of power.
God Rugal (Capcom vs. SNK 2)
Hunter Zolomon (DC Comics)
Algol (Soulcalibur series)
Gill (Street Fighter series)
Ryu (Street Fighter Unlimited)
King Cerberus (Devil May Cry 5)
True Dragon Sword and Blade of the Archfiend (Ninja Gaiden series)
God Rugal (Capcom vs. SNK 2) wields the combined forces of his Orochi Power and Akuma's stolen Satsui no Hado.
Hunter Zolomon (DC Comics) wields the combined power of the Speed, Strength, Sage, Still, and Forever Forces.
King Cerberus (Devil May Cry 5) is a Devil Arm that wields the combined power of fire, ice, and lightning.
After he defeated Genshin, Ryu Hayabusa (Ninja Gaiden series) was given his Blade of the Archfiend to wield alongside his True Dragon Sword. When the divine True Dragon Sword and demonic Blade of the Archfiend are wielded together, the enormity of their combined ancient power is immeasurable.
After attaining complete control of the Satsui no Hado and merging it with the Power of Nothingness, Ryu (Street Fighter Unlimited) was able to gain full control over the light and dark aspects of his ki, achieving his true potential and becoming Shin Ryu. In this form, Ryu possessed the power to defeat both Gill and Akuma after he became Oni.
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