Giganta

Giganta was a normal woman who was horseback riding when she witnessed Apache Chief using magic powder given to him by a Native American Elder that served as his mentor. The latter used it to grow larger so he could fight off a grizzly bear. Giganta stole the pouch with her lasso and used it on herself, gaining the ability to transform into a powerful giantess. The dust not only gave the two size changing powers, but influences personality as well as Apache Chief was brave when using it he became one hundred times more brave. Because Giganta had evil thoughts, it made her more evil as the Elder of Apache Chief's tribe had warned her.