Orca

Dr. Grace Balin was a marine biologist who experimented on herself using orca whale DNA, transforming her into a massive human-whale hybrid. Operating in Gotham's waters, she clashes with Batman while driven by her own warped sense of social justice.

Splashing into Gotham's rogues gallery with Batman #580 in 2000, Orca is a Modern Age DC creation from the team of Larry Hama and Scott McDaniel — a villain distinctive enough to earn a debut in the Dark Knight's own flagship title. Over a span stretching across 25 years, this memorable antagonist has surfaced across Batman, Nightwing, and Detective Comics, crossing paths with some of Gotham's most iconic figures, including Nightwing himself and the ever-watchful Alfred Pennyworth. With a modest but enduring presence in the catalog, Orca is exactly the kind of deep-cut DC character that rewards the curious collector willing to dive past the A-listers.