Here's a piece of gift art thanks to It's fanart of Giganta in her Justice League duds. Who is she? Well let's...
WIKIA ATTACK!!!
A villainous vixen with the power to grow into a towering, incredibly strong giantess, Giganta often comes into conflict with Wonder Woman. She seems to be romantically interested in the new Atom. Giganta can grow from human size to hundreds of feet tall in a matter of seconds. Her strength and durability increase to superhuman levels as she increases in size, as well. Initially, Dr. Zuel lost her intellect as she grew in size, becoming more brutish and violent. She has since transcended that limitation, retaining her full intellect at any size.
Giganta's powers appear to be mystical in nature; Giganta has been shown to be aligned with the forces of magic. The clothing she wears changes size when she does, and also increases her invulnerability during giant-size.
Close though...to be more specific, that one scene where Dana opens her fridge and there a doggie in there with a flashlight comin out her throat and says "ZUUUUUUL" which turns out to be her name and I never heard that name right then when I 1st saw tha movie!