Warning! Spoilers ahead for Dark Knight of Steel #4
In the latest issue of Dark Knights of Steel, the newest version of Batman finally learns the secret origins of his true parentage, uniting two of DC's most important families in this alternate medieval reality. While Thomas and Martha Wayne were killed when Bruce Wayne was young (not unlike the primary continuity), it's been revealed that Thomas Wayne was not Bruce's biological father. Instead, Dark Knights of Steel's Batman is part-Kryptonian, being the illegitimate son of Jor-El. However, this new issue reveals that while this version of Batman was born from a night of infidelity, he ultimately became a source of unification.
In previous issues from Tom Taylor and Yasmine Putri, it was revealed that Jor-El and his wife Lara escaped the destruction of Krypton with their son Kal, eventually becoming King and Queen of the realm following the deaths of the Waynes (with young Bruce growing up to serve as one of the Els most dedicated knights). Now, the recent Dark Knights of Steel #4 sees Alfred revealing the truth to Bruce who's discovered he's the bastard son of Jor-El, a fact which had long been kept from him and the rest of the kingdom.
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Landing on the medieval version of DC's Earth, the Els initially attempted to remain anonymous. However, the threat of a volcano saw Lara and Jor-El having no choice but to spring into action, revealing their powers to the kingdom ruled by Thomas and Martha Wayne in order to save it. This led to the Waynes and Els becoming great friends and the Kryptonians receiving the adoration of the kingdom. While one night threatened to tear that friendship apart
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