Gotham City Sirens #10

Guillem March's cover for issue #10 frames the trio of Catwoman, Poison Ivy, and Harley Quinn through a clever crossword puzzle motif — their names literally interlocked on the grid alongside "Gotham City Sirens," with a small portrait of the Riddler lurking at the bottom as an unfinished clue. Catwoman stands confidently in the foreground in her sleek black suit, whip in hand, while Harley Quinn mirrors her on the opposite side in her red-and-black costume, and a luminous Poison Ivy reclines dreamlike among floral imagery in the background. Writer Paul Dini and artists Andres Guinaldo and Raúl Fernández bring "Taking Sides" to life in this May 2010 installment of DC's fan-favorite team-up series.