Superman's Girl Friend, Lois Lane #92

Even by Silver Age standards, this May 1969 cover turns heads: Lois Lane gallops across the foreground transformed into a centaur — her dark hair flying, expression stricken — while a wide-eyed Superman looks on from behind a rocky outcrop, his cape billowing as he exclaims that a magic spell has left her permanently changed. Penciled by Curt Swan and inked by Neal Adams, the cover sets the stage for "The Unbreakable Spell!" with a genuinely unsettling transformation that gives the Man of Steel himself pause. It's a wonderfully strange corner of DC's Silver Age, capturing that era's flair for outlandish predicaments presented with complete earnestness.