Played entirely straight with the 2014 co-op minis game Myth from MERCS Miniatures. The core heroes are four men and a woman. (They do offer a set of gender-swapped heroes for separate purchase, which lampshades the problem with its relentless pinkness.)
The Star Wars Customizable Card Game has exactly one female Imperial: Mara Jade. Female Rebels show up twice: Leia and Mon Mothma. Alien species generally avert the principle, since any given race probably has fewer than five character cards.
In the Yu-Gi-Oh! game, Burstinatrix was originally the only female Elemental Hero (out of five), and it even said so on her original card. (The first version said she was the "only" female among them.) The next was changed because new Elemental Heroes appear later, including female ones, like Lady Heat and Poison Rose. (Rampart Blaster too, if you count the Fusion Monsters.)