After infusing himself with the Hōgoyku, Sōsuke Aizen (Bleach) became an immortal being with colossal amount of Reiryoku, wich became even stronger to the point where both Shinigami and Humans are incapable of sensing his Reiatsu unless he lowers it.
Gerard Valkyrie (Bleach), In the second form of his Völlstandig, is a godly powerful being, as befitting the heart of the Soul King.
After balancing his Shinigami, Hollow, and Quincy powers, Ichigo Kurosaki (Bleach) was able to unlock his full potential, increasing his Reiatsu expontentially and making him powerful enough that Yhwach genuinly consideres him a threat.
In the true form of his Völlstandig, Lille Barro (Bleach) possesses powers so great, he could only be injured by a weapon made to hurt gods.
After assimilating the Soul King into his body, Yhwach (Bleach) became a godly powerful being with immense spiritual power bolstering to incredible heights, to the point where he refers to it as "an excess of power".
Shido Itsuka (Date A Live) can channel the combined mana of all the Spirits he has sealed, enhancing his physical abilities to superhuman levels.
By harnessing the energy of six righteous Saiyans, Goku (Dragon Ball series) was able to assume the Super Saiyan God form, granting him access to Godly ki and allowing him to fight Beerus on more equal terms.
Beerus (Dragon Ball series) is the God of Destruction of Universe 7. As such, he possesses Godly ki that he uses to destructive effect, able to wipe out entire solar systems and effortlessly defeat Goku in his Super Saiyan 3 form.
Given that Goku Black (Dragon Ball Super) is actually the Supreme Kai apprentice of Universe 10, Zamasu, who took over Goku's body and engraved his fighting power into his own, he is able to manipulate Godly ki. However, given that Goku Black is a being of malcious intent, he possesses Evil Godly ki.
With the power of a Saiyan at his command, Goku Black can mix his own Godly ki with the Super Saiyan transformation to assume of the form of Super Saiyan Rosé. With his power greatly increased, Black was able to match Super Saiyan Blue Goku and Vegeta in terms of strength.
Future Zamasu (Dragon Ball Super) is an alternate timeline counterpart of the Zamasu who planned to eradicated every mortal in creation. After becoming a Supreme Kai after killing Gowasu, and thanks to his evil intentions, Zamasu came to possess Evil Godly ki.
Fused Zamasu (Dragon Ball Super), being the fusion of Goku Black and an alternate version of Zamasu, can manipulate high levels of Godly ki that are able to completely overwhelm Super Saiyan Blue Goku and Vegeta.
Due to Goku and Vegeta possessing the Super Saiyan Blue form, their Potara Earring Fusion, Vegito (Dragon Ball series), is able to use the transformation as well. With its power adding to his strength, Vegito possesses Godly ki great enough overwhelm the immensely powerful Fused Zamasu.
Like his Potara counterpart, Gogeta (Dragon Ball series) can also become Super Saiyan Blue, possessing levels of Godly ki that allow him to battle Broly in his Legendary Super Saiyan form.
As a result of his training with the God of Destruction Belmod, Top (Drago Ball Super) became able to access his God of Destruction form. In this form, he more powerful that ever before, not only able to use Energy of Destruction that is able to destroy everything it touches, and can unleash the Energy of Destruction to act a defense to negate any incoming attack.
After acquiring his Super Saiyan Blue・Shinka, Vegeta's (Dragon Ball series) Godly ki increased expotentionally. Not only was he powerful enough to not only greatly wound Toppo in his God of Destruction Mode, but dispel his Energy of Destruction with his power.
Natsu Dragneel (Fairy Tail) combined Fire, Iron, Sky, Lightning, Poison, White and Shadow Dragon Slayer magic into a single form, granting him enough power to slay Acnologia the Dragon King.
Hagoromo Ōtsutsuki (Naruto series) was the Sage of Six Paths, said to be a god-like figure of the ninja world. Anyone who possessed his Six Paths Sage Chakra was able to obtain some level of his power and create Truth-Seeking Balls to control the chakra natures.
After becoming the Ten-Tails's Jinchuriki, Madara Uchiha (Naruto) became able to possess the Six Paths chakra.
After becoming the Ten-Tails's Jinchuriki, Obito Uchiha (Naruto) became able possess the Six Paths chakra.
Sasuke and Naruto (Naruto) received the Six Paths chakra from Hagoromo, allowing them to use the Rinnegan and Six Paths Sage Mode respectively.
After consuming the Chakra Fruit of the God Tree, Kaguya Ōtsutsuki (Naruto) became the first wielder of chakra on Earth. As such she gained unparalleled reserves and strength in chakra, surpassing that of Madara when he became the Ten-Tails jinchūriki.
Tenchi Masaki (Tenchi Muyo! Ryo-Ohki) can generate the Light Hawk Wings, pure energy constructs and source of tremendous power that are the universe's manifestations of energy from a higher plane of existence. With the wings, Tenchi can covert them in armor, shields, and even weapons, but can only generate a set number of wings without destroying the universe.
Due to her gems having the same quality and power as Jurai's Royal Trees, if Ryoko Hakubi (Tenchi Muyo! Ryo-Ohki) possesses all of her gems, she is able to create her own Light Hawk Wings. When her body matured and when with her ship, Ryo-Ohki, she was able to generate 10 Light Hawk Wings, the absolute maximum three-dimensional reality can sustain without collapsing.
Given that Mayuka Masaki (Tenchi Muyo: Daughter of Darkness) is the cambion daughter of Tenchi Masaki and Yuzuha, the demonic spirit/counterpart to the Jurian trees of light, she possesses demonic powers of the Tree of Darkness as well the power of the Light Hawk Wings, allowing her to form the wings into a sword.
Tengen Toppa Gurren Lagann (Tengen Toppa Gurren Lagann) is Gurren Lagann most powerful form. With the combined Spiral Power of Simon and his comrades, the mecha became a mass of continuously materialized Spiral Power. Because of this it is the strongest mecha in the universe, possessing the abilities from its many pilots and an infinite amount of power depending on their will to win.
Shinobu Sensui (Yu Yu Hakusho) possessed the Sacred Energy through his six years of intense training (with a the aid of his seven personalities) and his need to correct the world around him.
The Three Kings (Yu Yu Hakusho), Raizen, Yomi, and Mukuro, were three Upper S-Class demons of immense power that ruled all of Demon World.
After discovering that he has to fight for the future of his friends, Yusuke Urameshi (Yu Yu Hakusho) was able to utilize his own Sacred Energy, placing him at the rank of an Upper S-Class.
Yakumo (Yu Yu Hakusho the Movie: Poltergeist Report) possessed the ability to covert sources of Spirit Energy and evil in human souls into Netherworld Energy increasing his power. He was also able to use the Power Sphere of the Netherworld to further bolster his power to that of an S-class and acquire his Meikai God form.
In the final battle against Clear Note, Zatch and Kiyo (Zatch Bell!) were powerless against his final form, but refused to give up. Their willpower became strong and enveloped their red book with a golden glow, allowing them not only the Heart Energy of their past Mamodo friends but also their strongest spells.