"I am just what you think I am, Megan. A "proto-mutant." It's as good a name as any. And I have the misfortune of being omnipotent, so I was forced to watch my entire race die, and live with that for the last seven hundred years."
― Gabriel Shepherd to Megan Gwynn/Pixie (Marvel Comics)
"You don't know what I am!! And you don't know what I can do!"
"I'm Doctor Who in this mother---ucker!
"I could be a clone! I could be a hologram!
"We could be clones controlled by robots controlled by special headsets that the real Rick and Morty are wearing while they're fu--ing your mother!!"
― Rick Sanchez to a General (Rick and Morty S03E10: The Rickchurian Mortydate)
Power to possess ultimate power, with certain limitations. Lesser version of Omnipotence.
Edge of Omnipotence
The user wields almost supreme power, but they have some form of limitation/weakness that limits their power and prevents them from gaining true omnipotence. They may be absolute on specific fields and not others or may simply be able to achieve an almost limitless number of effects across all fields with their near-omnipotent skills.
By definition, the user is in some ways limited. This may be the inability to affect something, do something in particular or being limited to certain spatio-temporal/dimensional area or concept/subject, common weaknesses include:
Weak to a certain item, weapon, ability, or concept.
Not being able to alter others' free will.
Other beings with similar/higher level of power.
Users are not Invincible. Compared to True Omnipotence, the user is only virtually impossible to defeat, as they are some certain instances where the user can be defeated.
Enerjak (Archie's Sonic The Hedgehog) was an Echidna demigod whose abilities are derived from the use of the Chaos Force and limited only by the imagination of his present avatar.
In the Digital World Phage (Archie's Sonic the Hedgehog) is nearly omnipotent due to all the information she has absorbed.
Mr. Mxyzptlk (DC Comics) pulls a universe from his hat.
Dr. Manhattan (DC Comics)
Eclipso (DC Comics)
Captain Atom's (DC Comics) connection to the quantum field enables him to draw upon infinite amounts of energy, allowing him to use it for purposes that are solely limited by his willpower and imagination.
As a member of the Douwd, Kevin Uxbridge (Star Trek: TNG) has the power to wipe out an entire species from existence without any effort, and yet has no power over life as he is unable to revive anyone that has died.
Amara/The Darkness (Supernatural) wields near-infinite power, and could not be destroyed by even the combined might of God and the Archangels, just sealed away.
God/Chuck Shurley (Supernatural) is one of the most powerful beings in the SPN universe, surpassing almost everything else, including the Archangels. Only The Darkness and Death rival his power and might.
Death (Supernatural) is only rivaled by God and The Darkness. He can do virtually anything he wants, and slay anything in creation, from humans to the Archangels with no effort.
The Archangels (Supernatural) were imbued with immense power by God, and are among the most powerful beings in the Supernatural universe, being able to achieve virtually anything with Reality Warping. They can overpower and kill anything except God,The Darkness and Death.
After absorbing 40 million souls from Purgatory, Castiel (Supernatural) gained nigh omnipotent powers, enabling him to kill Raphael, thousands of angels and unknown amounts of humans without effort. In this state, he is surpassed only by God, Death and possibly Michael and Lucifer.
When Lucifer is on Earth, Jesse Turner's (Supernatural) power is enhanced to a nigh omnipotent level, allowing him to do virtually anything he wants, such as bringing myths to life, exorcise demons with only a word, turn Castiel into a toy and at his very peak, destroy the Host of Heaven.
Jack Kline (Supernatural), as the son of the Archangel Lucifer, is a Nephilim imbued with near-limitless power, becoming even more powerful than Archangels and capable of such feats such as waking Castiel in The Empty, something that is said to be impossible for even God to do and can even create new angels by transforming human souls.
DIO, Gone To Heaven/Heaven Ascension DIO (Jojo's Bizarre Adventure: Eyes of Heaven)
Brain (Skylanders) is a master of Mind Magic, allowing him to do anything as long as he can think of it.
Lucifer (Valkyrie Crusade) is Nigh-Omnipotent, having power that can compete with that of God himself, but she is still surpassed and overwhelmed by him.
Michael (Valkyrie Crusade) is God's infinite power, with only God himself above her.
Kain (Legacy of Kain) is the most powerful entity that exist in his Universe,Being the Elder God,the only one that likely match his powers.As Scion of Balance is a being that "Balances",his entire universe,besides that,is a Nigh-true immortal,has powers that make it practically untouchable,and even invulnerable,has infinite energy,can manipulate: Reality,Space-Time,all Nature,Death,Energy,Transmute and create life,warp the states of matter,telepathy,manipulate emotions,create illusions,and a large etc.
Genie (Aladdin) possesses virtually unlimited magical power; the only things he can't do are kill anyone and make people fall in love.
Chaos (Aladdin) is said to possess more power in his little whisker then a palace full of genies. with the only limitation to his power being that he cannot change things that are predetermined by fate.
Alien X (Ben 10) is capable of altering reality itself with his mind, but is incapable of doing anything unless 2 of his 3 personalities agree to an action.
Reality Gauntlet (Danny Phantom)
Pariah Dark (Danny Phantom) wears the Ring of Rage and the Crown of Fire to gain infinite power.
After fusing with Vlad's evil ghost half Dan Phantom (Danny Phantom) became a ghost so powerful that Time Travel was required to prevent his conquest of the world
Rex Salazar (Generator Rex) as host of the Five Meta-Nanites could virtually do anything he desired.
Bill Cipher (Gravity Falls) with a physical form is so powerful he easily vaporized Time Baby and the Time Police.
Discord (My Little Pony series) is nigh omnipotent.