Z Nation's Lucy is growing like a little zombie weed.

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Pie Girl delivered a little bundle of joy to the post-apocalyptic world, but thanks to Murphy's genes, little Lucy popped out with a grayish hue and the ability to control zombies.

While Z Nation has yet to fully explore the breadth of Lucy's powers, but accelerated growth is certainly on the list. The youngster made a surprise appearance in the finale, and she was certainly no longer a newborn.

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"I bet they're going to bring her back, and I bet she ages really quickly," Keith Allan teased ahead of "All Good Things Must Come To An End," according to Talk Nerdy With Us. "I'll bet next time we see her she's going to be twelve years old or something."

Lucy wasn't quite that old when we saw her last, but she will hit adolescence in season 4.

"In the course of this season, she's going to grow up to be a teenager," series creator Karl Schaefer told TV Insider. "She's going to be a force to be reckoned with."

Are you ready to meet a hormonal teen with the power to commune with the undead? Find out when Z Nation returns to Syfy later this year.