Jimmy Kimmel dubbed Elon Musk “Sex Luthor” after a new report from The Wall Street Journal gave an inside look into his continued efforts to father and build a “legion” of children.

As Kimmel put it on the Jimmy Kimmel Live, the WSJ report reveals Musk’s agenda in building a “harem of baby mamas.” The report also notes Musk may have more than the 14 children who have been confirmed so far.

“It is believed that Elon has fathered at least 14 children and based on this photograph he may have given birth to them, too,” he joked, sharing a photo of Musk in a swimsuit. “[He] carried a few of them in his pouch like a kangaroo.”

Kimmel then criticized Musk’s claim that “declining birth rates are the greatest threat to humanity.”

“I’m not sure what planet Elon lives on, this one seems full to me, you ever goto Costco on a Saturday? You ever try to get out of the parking lot at Dodger Stadium?” he said.

The WSJ report included a text message from Musk in which he told one of the women that he planned to get more women pregnant.

“To reach legion-level before the apocalypse, we will need to use surrogates,” he reportedly wrote.

Kimmel joked, “He even texts like a super villain. He’s Sex Luthor.”

“But it makes sense Elon loves babies,” he continued. “He spent $300 million to get one elected president, he loves them so much.”

The late night host has criticized Musk for fathering over a dozen children. After Musk’s 14th child was born in March, Kimmel pointed out that it coincided with him pushing for the United States to pull out of NATO and the United Nations.

“Elon Musk, he has 14 kids, he doesn’t ever pull out,” Kimmel joked.

“Elon had baby #14 over the weekend,” Kimmel announced on the show. “The baby’s mother tweeted the child’s name which is Seldon Lycurgus. I wonder if when he impregnates these women they have a conversation he’s like, ‘There’s one thing thats very important to me. The child must have a ridiculous name.’”

Jimmy Kimmel Live airs weeknights at 11:35/10:35c on ABC.