The user can release and surround themselves in/with electricity for defensive and/or offensive purposes, possibly becoming almost untouchable and granting them various abilities/attacks. The auras may also give the user enhanced physical capabilities such as speed, strength and durability.
Spaceman KISS (Scooby Doo and KISS and rock and roll mystery)
Metal Sonic (Sonic the Hedgehog)
Blanka (Street Fighter series)
Keyblade Wielders (Kingdom Hearts series)
Electric-type Pokémon (Pokémon series)
Laxus Dreyar (Fairy Tail)
Vortex (Danny Phantom)
Professor Sunshine (OK K.O.! Let's Be Heroes)
Sparko (OK K.O.! Let's Be Heroes)
Kouki Samejima (Highschool DxD); via Sacred Gear
Mikoto Misaka (A Certain Magical Index)
Gwen Tennyson (Ben 10)
Yoruichi Shihōin (Bleach) using Shunko to infused herself with a powerful aura of electricity.
Vortex (Danny Phantom) surrounded by an aura of electricity.
Lightning Lad (DC Comics) surrounding himself with electricity.
The Flash (DC Comics) surrounded with an electrical aura.
Jefferson Pierce/Black Lightning (DC Comics)
Static (DCAU) surrounding himself in electric.
Nappa (Dragon Ball Z) using Lightning Aura to infuse his body with electricity, greatly enhancing his strength, speed, and techniques
Son Gohan (Dragon Ball series), like most ascended Saiyans, can produce an electrical aura around them whenever they transform into a Super Saiyan 2 or higher.
Majin Vegeta's (Dragon Ball Z) Super Saiyan 2.
Son Goku's (Dragon Ball Z) Super Saiyan 2.
Killua Zoldyck (Hunter X Hunter) can efficiently change his Nen aura into electricity. As such he developed a special technique - Godspeed, in which he can enhance his speed and reflexes to godly levels.
Electro (Marvel Comics) enveloping himself in an electrical aura.
Surge (Marvel Comics) coating herself in an aura of electricity.
Johnny Ohm (Marvel: Rise of the Imperfect)
The Third Raikage (Naruto) created the Lightning Release Armor technique, which drastically increased his reaction time and speed...
...which he taught to his son, Ay/A the Fourth Raikage.
Laxus Dreyar (Fairy Tail) surrounds himself in the electrical energy thanks to his Lightning Dragon Slayer Magic.
Pepe (SNK) can surround himself with lightning energy.
Sandra (Los Protegidos)
Pikachu (Pokémon) surrounding itself in an electric aura.
Electivire (Pokémon) surrounded in an aura of electricity after its Motor Drive ability is activated.
Tommy Thayer/Spaceman KISS (Scooby Doo and KISS and rock and roll mystery)
Metal Sonic (Sonic the Hedgehog) surrounds himself with an electrical aura that can penetrate virtually any substance using the V. Maximum Overdrive Attack.