Sarah Ravencroft's spell book (Scooby-Doo and the Witch's Ghost)
Gem of Cyttorak (X-Men: Evolution)
Awakening (Saga Frontier)
When worn, Power Surging: Balzac (Akame ga Kill) can tap into the wearer's body and mind and unlock its full potential, giving the wearer super speed, super strength, lightning-quick agility and unparalleled intelligence.
The Berserker Armor (Berserk) unlocks the wearer's full combat potential by disabling the body's subconscious limiters.
The Hogyoku (Bleach) unlocked the hidden potential in Orihime and Sado, answering their need to no longer be burdens.
Ichigo Kurosaki (Bleach) has gained the true Tensa Zangetsu, realizing his full potential.
Dendritic Cell (Cells at Work) can activate the potential of immune cells, boosting their power and turning them into Effector Cells for a short amount of time.
Through the X-Antibody (Digimon) a Digimon can evolve to draw out their maximum potential; the more latent potential it has, the more drastic the change is.
Dark Spores (Digimon Adventure 02) draw out said hosts' academic and athletic potential, but also end up corrupting them as well.
In addition to placing others under his control, Babidi's (Dragon Ball series) magic also draws out their hidden power…
…something that Vegeta took advantage of…
…in order to gain the power to defeat Goku.
The Old Kai (Dragon Ball series) in the process of unlocking Gohan's full potential.
Gohan's (Dragon Ball) Potential Unleashed form is the result of having all of his dormant potential unlocked by the Old Kai.
The Ultra Divine Water (Dragon Ball) can unlock the potential and hidden powers of whoever drinks it, provided they survive…
….having drank it, Son Goku unlocked his hidden potential.
After being cornered by Goku in the final moments of the Tournament of Power, Jiren (Dragon Ball Super) became angered and awakened a deeper threshold of latent potential, achieving his Burning Ultimate Warrior state.
As a Zone User, Taiga Kagami (Kuroko's Basketball/Kuroko no Basuke) is able to enhance his capabilities to their full potential by using 100% of his concentration.
Belo Betty (One Piece) can use her Pump-Pump Fruit/Kobu Kobu no Mi to rally others, greatly increasing their physical abilities.
In addition to letting him control living things, Breed (One Piece) can use the power of the Pet-Pet Fruit/Peto Peto no Mi to bring out the full potential of those he controls…
In addition to turning them evil, Dark Balls (Pokémon 4Ever) unlock a Pokémon's potential, raising their strength to the highest level.
Spekkio (Chrono Trigger) was able to unlock the magical potential of everyone in Crono's party.
The Force Edge (Devil May Cry series) appears to be a simple blade at first…
…but when in contact with the Perfect Amulet…
…it becomes the Sparda, a Devil Arm with godlike power.
The Rebellion (Devil May Cry series) was able to awaken its full potential after coming into contact with the blood of its wielder, Dante…
…as well as awaken Dante's dormant potential and allow him to access his Devil Trigger.
Similary, The Yamato (Devil May Cry series), when restored by Nero's Devil Bringer…
…was able to help Nero (Devil May Cry 4) unlock his Devil Trigger, allowing him to summon a spectral demon avatar that wields Yamato and fires Summoned Swords.
Determined to prevent Dante and Vergil from killing each other, Nero (Devil May Cry series) was able to unlock his full demonic potential, allowing him to regenerate his severed right arm…
…and access his own innate Devil Trigger.
By the year 1000, the different incarnations of Shenron (Dragon Ball Online) are mostly used to unlock the full potential of humans, Namekians, and Majins, allowing them to transform.
The Keyblade of Heart (Kingdom Hearts) can unlock a person's heart and release their inner darkness…
…with Maleficent becoming a powerful dragon upon being stabbed with it.
By unlocking his different Drive Forms, Sora (Kingdom Hearts) is able to realize his full potential.
The Chronicler (The Legend of Spyro) was able to help Spyro reawaken his potential and unlock his elemental powers after he exhausted them against Cynder.
The Master Sword (The Legend of Zelda: Skyward Sword) has been blessed by Zelda, the mortal reincarnation of Hylia, unlocking its true potential.
By forming bonds with Sonic and his friends and learning their skills and powers, Emerl (Sonic the Hedgehog) was able to unlock his nigh-unlimited fighting potential eventually becoming Ultimate Emerl.
The Warrior of Light (World of Final Fantasy) was once a mere soldier, but his potential as a Champion was awakened by the powers of Lann and Reynn.