Superman #371

In "Kandor Lives Again! ...If You Can Call This Living!", Superman attempts to give two residents of his miniature Kandor a chance at life on Earth—only to find their transformation into human form triggers a shocking regression, unleashing primal instincts they can’t control. As the city’s tiny inhabitants struggle to adapt, a new threat emerges in the form of the Purple Pile-Driver, while unexpected allies like S'aje and Grace Smith [G'Ras] begin to surface.