For a long time I’ve vaguely assumed that Elektra Natchios, a character introduced by Frank Miller during his run on the comic book Daredevil, was inspired by Melina Havelock, a character in the James Bond film For Your Eyes Only (played by Carole Bouquet).
I mean, they’re both Greek, they’re both assassins, they both use retro weapons, and they’re both avenging their parents’ murder. Each’s commitment to revenge puts her at odds with her nominally anti-revenge but kinda-hypocritical-on-the-subject male love interest and story protagonist. They look something alike (frankly more than comic-book Elektra and later movie-Elektra Jennifer Garner do). And Melina even compares herself explicitly to the original Greek mythological figure Elektra, an avenger-of-a-slain-father after whom Miller’s Elektra is evidently named.
Alas for my theory, Miller’s Elektra made her first appearance six months before the Bond film was released. So Melina couldn’t have influenced Elektra; and given the timing, influence in the other direction isn’t feasible either. So it’s just a coincidence type thing deal. Drat!