"Some are born great, some achieve greatness, and some have greatness thrust upon them."
― William Shakespeare
"I tell you this: though neither he nor they yet know it, he is the greatest of all the Jedi. Jacen Solo is the living Jedi dream. Even without the Force, he is more dangerous than you can possibly imagine"
― Vergere to Nom Anor on Jacen Solo (Star Wars Legends)
"Were it not for that tragedy, Ki Sui-sama could have become one of Zhao's Great Generals."
― Granny Kon to Kyou Kai (Kingdom)
"Hmph. Ri Boku…you could have mentioned earlier you had such a fierce tiger lying dormant so close to Yan’s borders!"
― Ordo on Shi Ba Shou and his army (Kingdom)
"Only once every 1,000 years or so does such a person with a phenomenal ability like this appear."
― Satoru Gojo on Yuji Itadori (JUJUTSU KAISEN)
"Everyone perceived him to be a tiger cub without any fangs. However, it seems all of that is untrue. Not only are his fangs still intact, but he's also a full grown tiger. A great tiger with deadly fangs."
― Seo Geum-Hyang on Jin Mu-Won (Legend of the Northern Blade)
The user has a potential and capacity for growth and learning beyond that of a normal member of their species, allowing them to learn and develop in a shorter span of time than normal members of their species can and even learn things which are physiologically more difficult for said normal members of their species.
Even as a child, Kenpachi Zaraki's (Bleach) raw potential allowed him to kill hundreds of outlaws and defeat captain Retsu Unohana.
Frieza (Dragon Ball series) has almost incomparable potential. Not only was he born with a power that most beings would only dream of, but when he trained for the first time in his life…
…he gained power comparable to gods within four months of training.
Majin Buu (Dragon Ball series), while already godly powerful, has immense potential for additional growth...
...after training for just a few hours, he lost all his fat & gained muscle and became significantly stronger.
Born a mutant, Broly (Dragon Ball Super) has an abnormally high potential, even for a Saiyan.
Being a Variant Hayato Kisaragi (Hundred) is the most compatible with Hundreds compared to even geniuses, although he has shown to be above others being able to create a small tree after touching one for the first time…
…after training to wield Hien for a couple of hours, he could manifest its Full-Bodied Armament. Hayato has soon become the Hero of the Earth after defeating "God", then the Hero of the Universe for killing the Ultimate Savage, thus ending the savage threat.
Recognized by Vima-Da-Boda to have vast potential in the Force, Kyp Durron (Star Wars Legends) would go on to become one of the strongest Jedi in the entire history of the New Jedi Order.
Jacen Solo (Star Wars Legends)
Anakin Solo (Star Wars Legends) had amazing potential in raw Force power. Even as a child, the level of his potential was acknowledged by Jedi, Dark Jedi, and Sith alike, including Luke Skywalker and Darth Sidious.
As the son of two powerful and famous Force Users, and the grandson of the Chosen One, Ben Skywalker (Star Wars Legends) was immensely strong in the Force from the moment of his birth.
Possessing exponential talent in warfare, Shi Ba Shou (Kingdom) is capable of performing on a level that rivals the greatest generals of Zhao, his skills even caught the eye of Ri Boku who recommend him the final seat of the Three Great Heavens of Zhao in recognition of his abilities.
Considered by many to be a prodigy in warfare, Ki Sui of Rigan (Kingdom) has demonstrated both incredible tactical acuity on vast battlefields...
...and fighting prowess as he one shot a 1000-man commander of the brutal Kan Ki Army with his podao.
Kou Yoku of the Thunder (Kingdom) has a great deal of potential with his swordsmanship...
..., which allowed him to fight Great General Tou, an extremely capable swordsman himself just days after he killed his general.