Cat

Stepping out of the vibrant, ensemble-driven world of DC's Justice League titles, Cat made their debut in Justice League Europe #16 in 1990, born from the creative minds of Keith Giffen, Gerard Jones, and Bart Sears during comics' Copper Age. It's a pedigree worth noting — those Justice League books were among the era's most beloved, and Cat's brief run brought them into orbit alongside heavy-hitters like The Flash, Power Girl, and Metamorpho. With appearances spread across Justice League Europe, Justice League America, and Justice League Quarterly, Cat may have a compact footprint in the catalog, but for fans who love hunting down the corners and curiosities of DC's rich early-'90s landscape, that's exactly what makes a discovery like this so satisfying.