Sharkning (シャーキング, Shākingu) is a great white shark from the Central City Aquarium that was poisoned by The Lightning Formula, turning him into The Lightning's pet shark. 

Vital statistics
Aliases Big Fella
Birthplace Pacific Ocean
Date of Birth Unknown
Age Unknown
Family Unknown
Affiliations Unknown
Alignment Unknown
Species Shark
Occupation Aquarium Animal (formerly) Pet Demon Shark
Rank Unknown
Abilities Mouth laser, laser vision, super-speed, super-strength
Power Level Unknown
Weapons Razor-sharp oversized teeth
Unique Trait Looks like an android shark
Goal Eat Edward Elric
First Appearance Episode 66: For The Fishes (2017 series)
Voice Actor Shane Ray (FUNimation Dub)
Seiyū Yasuhiko Kawazu