Livewire (CW)
Real name: Leslie Willis
Full name: Leslie Willis
Aliases: Livewire
Alignment: Neutral
First appearance: Supergirl Season 1: Episode 5
Place of birth: Earth-38
Occupation: formery Shock Jock at Catco Worldwide Media
Base: National City
Gender: Female
Race: Metahuman
Height: 5'8" • 173 cm
Weight: 115 lb • 52 kg
Eye color: Blue
Hair color: Grey
Superpowers: Durability, Electrical Transport, Electrokinesis, Energy Absorption, Energy Blasts, Energy Constructs, Levitation, Marksmanship, Super Speed, Technopath/Cyberpath
Stats: intelligence 75, strength 10, speed 70, durability 60, power 80, combat 65

History:
Leslie Willis (died January 22, 2018), also briefly known as Roseanne, was a former shock jock of CatCo Worldwide Media. After a fatal helicopter accident, Leslie gained electrical powers and turned into the supervillain Livewire. She later became an ally of Supergirl and sacrificed herself to save her from Reign.

Powers:
 As a result of Supergirl being struck by lightning while making physical contact with Leslie, the lightning (which also contained Supergirl's Kryptonian DNA) passed into Leslie, augmenting her physiology and allowing her to access her abilities.  Leslie is able to control and siphon electricity, as well as to transform into electricity. She has used it to conjure lightning blasts of various intensities and lengths and, while siphoning the entire city, her electricity became powerful enough to incapacitate Supergirl herself with one blast and potentially kill her, though she could also simply fight her off with lesser amounts. Her lightning can form into solid constructs, such as a whip or flail, which she used to restrain Supergirl. This electricity could be used knock people backwards without truly harming them, which she did to James Olsen, or to lift people into the air, as she did to Barry Allen while shocking him, before slamming him into the floor. In addition, she can electrify her touch enough to electrocute a person to death if they came into physical contact with her. If Leslie is completely drained of her power, or exposed to water, she reverts to her solid form and cannot use most of her abilities, nor will she then be able to transform into living electricity.  Leslie is able to use the electrical energy to rise into the air.  Livewire can completely transform into living electricity and travel through anything that will conduct an electric current, such as circuits and wiring. In her electrical state, Leslie can possess and control any device that conducts electricity, such as electronic screens and audio systems, as well as cause a blackout through an entire city.  Leslie's powers depends on the amount of energy she possesses, and like a battery, her powers are not indefinite. To re-power herself she must absorb a vast amount of electricity from an available power source. However, she is able to absorb not only electricity, but other forms of energy, to give herself strength. Even the energy from Kryptonian heat vision, or a speedster's residual Speed Force energy can be a suitable power source for her, though the latter can make her even stronger, due to its electrical nature.  Leslie possesses superhuman durability, as she could take hits from Supergirl and could fight her off with the help of her electrical abilities.