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.
Yoruichi Shihōin (Bleach) using Shunko to infused herself with a powerful aura of electricity.
Mikoto Misaka (A Certain Magical Index)
Vortex (Danny Phantom) surrounded by an aura of electricity.
Static (DCAU) surrounding himself in electric.
Lightning Lad (DC Comics) surrounding himself with electricity.
The Flash (DC Comics) surrounded with an electrical aura.
Jefferson Pierce/Black Lightning (DC Comics)
Nappa (Dragon Ball Z) using Lightning Aura to infuse his body with electricity, greatly enhancing his strength, speed, and techniques
Majin Vegeta's Super Saiyan 2 (Dragon Ball Z)
Son Goku's Super Saiyan 2 (Dragon Ball Z)
Thanks to his Lightning Dragon Slayer Magic, Laxus Dreyar (Fairy Tail) can surround himself with powerful electrical energy.
Rollermines (Hλlf-Life 2 series) are sphere-shaped robots that possess retractable appendages that cause an electric aura to surround them, in order to deal shocking damage to enemies when they physically assault them, especially if there were a swarm of them.
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.
Max Dillon/Electro (Marvel Comics) enveloping himself in an electrical aura.
Noriko Ashida/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.
Pikachu (Pokémon) surrounding itself in an electric aura.
Electivire (Pokémon) surrounded in an aura of electricity after its Motor Drive ability is activated.
Sandra (Los Protegidos)
Tommy Thayer/Spaceman KISS (Scooby-Doo! and Kiss: Rock and Roll Mystery)
Pepe (SNK) can surround himself with lightning energy.
Metal Sonic (Sonic the Hedgehog) surrounds himself with an electrical aura that can penetrate virtually any substance using the V. Maximum Overdrive Attack.