Zack has eight children. Four of them are adopted and four are from relationships with a couple of different women. In 2017, his daughter, Autumn, who had been just over a year old when he and ex-wife Denise Weber adopted her, died by suicide. It was a tragedy that prompted Zack to add her favorite song to Justice League and dedicate the director's cut of the movie to her as well.

Zack and Denise's other child, Eli Snyder, is an actor who has appeared in movies like Watchmen and 300. One of Zack's other daughters, Willow Snyder, was adopted from China like her sister Autumn. And, much like some of her siblings, there isn't much known about her, short of having a close relationship with her sister before Autumn's sudden passing.

Willow, Jett, Sage, Olivia, Cash, and Ezekiel all make up the rest of Zack's kids. And, although he doesn't share them with just one partner, they all seem to be close to each other and their dad. Zack's kids seem to be his crowning jewel, despite being such a huge deal as a film director.

He told Vanity Fair that being able to dedicate his cut of Justice League to Autumn was his way of proving how much she inspired him.

"When you think about the catharsis of it, if I was a potter, I would've made some pottery to look for some way through this," he explained to the outlet. "But I'm a filmmaker, so you get this giant movie. At the end of the movie, it says 'For Autumn.' Without her, this absolutely would not have happened."