Both stories are widely regarded to be two of the best Batman stories of all-time and in-part responsible for the character's return to popularity after the end of the 1960s show. The Dark Knight Returns: The Last CrusadeĪlthough initially positively received thanks to stories like The Dark Knight Returns and Batman: Year One, praise towards the 'Dark Knight Universe' have gradually diminished due to follow-ups following 2001.All Star Batman and Robin the Boy Wonder.Batman also allies himself with Carrie Kelley, who eventually succeeds him as Gotham's next protector: Batwoman. In addition, he 'fires' Dick Grayson, retires after the death of Jason Todd, and eventually returns at the age of 55 to lead the return of superheroes to overthrow the corrupt government, led by Lex Luthor. Batman also has a taste for casual sexual relationships, having a love affair with Catwoman and whimsically engaging in intercourse with Black Canary. He is also less helpful to its Robins, treating them like soldiers and at times abusive to them. In particular, Batman is imagined as a more ruthless vigilante willing to use more brutal methods and even kill where necessary. In stark contrast to its main counterpart, Earth-31's superheroes were more cynical and less heroic. Initially considered one of the fifty-one divergent realities from New/Prime Earth, it is the setting of all of Frank Miller's DC works (although Batman: Year One was once considered part of the canonical DC Universe). The Dark Knight Universe is the reality of Earth-31, a parallel earth within the DC Multiverse. For the reality seen in Christopher Nolan's Dark Knight film trilogy, see: Nolanverse

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