Official Bio: The result of a clandestine mutagenic experiment,
Inque is a treacherous shape-shifting femme fatale. She has the ability
to transform from her natural human form into a pitch-black, semi-liquid
state, in which she can slip through the smallest crack, mimic any
object, or harden herself to deliver a mean wallop in a fight.
Inque's knack for sliding under doors and through narrow air vents made
her a perfect corporate saboteur for hire, an occupation that had
Interpol on her tail for years. But more recently, after being briefly
captured by Batman and the elder Bruce Wayne, Inque has set aside her
usual job to dedicate herself to shutting the pair down for good.
Biography (Cartoon Network): Inque is a polymorph, which means
she can change her size and shape at will. Transformed into a fluid dark
blob after a bizarre lab experiment, Inque turned to a life of corporate
sabotage, offering her services to anyone who agreed to meet her price.
Inque can form deadly tentacles or flatten herself into an oozing
puddle. She is difficult to capture and can regenerate herself if cut in
two. She has super strength and the ability to climb up walls and
ceilings. In other words, Inque is a wily opponent who brings plenty of
trouble to Batman's door.
For more, refer to the Justice League