The following contains spoilers for Batman/Superman: World's Finest #7, on sale now from DC Comics.

Batman and Superman are two very different heroes. This is part of what makes them one of the best duos in comics. From their powers and personalities to the threats they face, they are almost as different as two heroes can be. However, they do share a few unexpected qualities, as seen in Batman/Superman: World's Finest #7 (by Mark Waid, Dan Mora, Tamra Bonvillain and Steve Wands).

The issue introduces a new hero with origins similar to the Man of Steel, David Sikela, who is a young refugee from the now-dead Earth of an alternate universe. After having a discussion with Batman about what they should with the boy, Superman elected to adopt David.

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Batman and Superman talk about fatherhood in DC Comics

The fact that Superman is now this child's legal guardian continues a relatively recent trend of the Man of Steel acting in the role of a father figure. This also reveals that he has a surprising character trait in common with Batman, who is well known for his tendency to take in orphans and mold them into his own image. With Superman's new adoptee/sidekick (who has taken on the name Boy Thunder), he has officially had three children under his care in DC's mainstream continuity.

Apart from David, Clark also has his biological son Jonathan and Christopher, his lesser-known adopted child. Although David is the most recent introduction to Superman's family, because this story takes place in the past he is chronologically the first child of the Man of Steel. Chris Kent first appeared in 2006's Superman: Last Son (by Richard Donner, Geoff Johns and Adam Kubert). He was the son of General Zod, born in the Phantom Zone, and was named Lor-Zod by his birth parents. Jon Kent was later introduced in 2015's Convergence event, and his childhood was one of the focal points of the DC Rebirth era.

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DC Comics Superman and Chris Kent flying

While Batman seems to have no problems taking on young wards, this hasn't been a major part of Superman's story previously. Although he is a great father to Jon, the Man of Steel didn't exactly have a great attitude towards parenting. Prior to adopting Chris, he first met Conner Kent's Superboy. Despite the teen hero being cloned from his DNA, Superman actually rejected the idea of Conner being his son. He did, however, settle on acting in the role of an older sibling, a story that was played out prominently in the animated Young Justice series.

Considering the facts from his past and his journey of growing into fatherhood, Superman will most likely fail Boy Thunder. This may actually end up being the protagonist for him striving to be a better parent to Chris and Jon in the future. Superman's role as a father were highlights of the Rebirth era, and the story now playing out in World's Finest will most likely offer an explanation as to how he evolved into the role.