Bomberman (Bomberman 64: The Second Attack) detonating a Lightning Bomb.
Watt (Paper Mario) can generate powerful electricity.
Enel (One Piece) has the power to generate lightning because of the Goro Goro no Mi.
Mikoto Misaka (A Certain Magical Index) can generate as much as 1,000,000,000 volts.
Kanon Ozu (Coppelion) had an eel gene inserted into her, allowing her to generate and control electricity.
Jackie Chun (Dragon Ball) using his Bankoku Bikkuri Shō to generate about 20,000 volts of electricity.
Electrivire (Pokémon) can generate electricity for attacks like "Thunder Punch".
Fu Chi'en (Tenjho Tenge) can draw electricity from the earth and utilize it as he wants, so long as his feet are rooted to the earth.
Iroh (Avatar: The Last Airbender) generating electricity.
Sasuke (Naruto) generating lightning chakra and infused it into his blade.
Hitomi (Code:Breaker) generating electricity.
Toki (Code: Breaker) using electromagnetism to create electricity.
Electro (Marvel) can generate a large quantity of electricity.
Elle Bishop (Heroes) generating electricity.
Sylar (Heroes) generates electricity to regain control over his body from "Nathan".
Jin Kazama (Tekken Series)
Elle (Heroes) teaches Sylar how to use her ability.
Dash Gardiner (Witches of East End) electrocutes man.
Krell (Charmed) shooting electricity.
Palpatine (Star Wars) is a master at generating Force lightning.
Garnet (Steven Universe) generating electricity to charge a car battery.
Zapfish (Splatoon) are used by both the Inklings and the Octarians as a source of renewable power.
The Great Zapfish (Splatoon) generates enough electricity to power the entire city of Inkopolis.
The Flash's (The Flash TV Series) connection to the Speed Force causes his body to generate massive amounts of electricity.
Denki Kaminari (My Hero Academia) possesses the quirk "Electrification", allowing him to generate electricity from his body. However, exceeding his wattage limit would short circuit his brain, leaving him temporarily brain dead for an hour.
Galian's strongest ÄRM, Guardian ÄRM, Torpedine (Marchen Awakens Romance) is said to be able to generate the most deadly lightning.
As a god of lightning, Baal (The Wicked + The Divine) has divine power over lightning and electricity...
...capable of using it for deadly force.
Having possessed his powers for decades, Kessler (inFamous) has a near unlimited reserve of electricity, not needing to recharge during battle.
Yellow Diamond (Steven Universe) can generate an electrical force that can destabilize a gem's form.
As he grows more and more powerful, Doomsday (DC Extended Universe) generates massive discharges of electricity.
Sailor Jupiter (Sailor Moon) calling forth Lighting.