Audrey Schmidt Audrey Schmidt is a contributing writer at PEOPLE. She has been working at PEOPLE since 2022. Her work has previously appeared in TODAY.com, POPSUGAR, SheKnows and more. Cook and Gillies welcomed their son, Theodore Vigo, on April 4, 2015. They first announced they were expecting their second child three months after their daughter’s first birthday. “We’re as happy as we were surprised by this wonderful news! We haven’t slept since 2013 and welcome advice from all parents who survived Two Under Two,” the couple said in a statement at the time. After his birth, it took the second-time parents several days to choose their newborn’s moniker. “We just couldn’t settle on a name because it’s such an important decision,” Gillies told PEOPLE. He added that he used the nicknames “sweetheart,” “raisin” and even “calcified alien” for their son in the meantime. “Even after he was born we couldn’t determine whether or not he was Theodore or Vigo, because he was just so beat up from [being born],” he added. “Some might say he should be Vigo because of Viggo Mortensen, kind of battle-scarred. But there was something so adorable about him.” “In the end, he got both names: Theodore, Vigo, and my wife likes Sullivan,” he shared. “He was born on the fourth [day] of the fourth [month], and I said, ‘Let’s give him four names. Four seems to be his number.’ ” Theodore’s arrival made a then-18-month-old Charlotte a big sister. "... [Charlotte] is a very sweet, older sister to him and she's day-by-day becoming more and more ... demonstrative," Gillies told Entertainment Tonight in 2017 about the sibling dynamic. "She'll be really sweet to my son and be like, 'Look, Daddy! Look at how great I'm being,' so that she can receive the reward later on, which is inevitably that I have to play her episodes of Dora the Explorer," he added. Even though Cook and Gillies had experience under their belt with the newborn phase, Gillies admitted that each child brought a different experience. “You think the experience is going to be identical, but it’s just not,” Gillies told PEOPLE in 2015 of their son, who was nearly 3 months old at the time. Gillies said Theodore was “just all smiles” as a baby, while Cook revealed, “I finally got a cuddler!” Cook has shared glimpses of Theodore’s life over the years, posting snaps of his handiwork in 2021, including a multi-use craft he worked on for his mom when he was 6 years old that doubled as a purse or a helmet. She has also revealed that Theodore, who along with his sister, joined her on the red carpet for the premiere of Rennervations in 2023, was spooked by the first movie she did specifically for him and Charlotte called Spirit Halloween. "I was really excited to show it to them because they really wanted me to do the movie," she told PEOPLE in 2022. "And I know that every actor, [like] myself, in their 40s is like, 'I made this one for the kids.' But this is my first 'I made one for the kids' moment." While her daughter thought the film "was awesome," Theodore "said it was a little scary, but he's 7," Cook shared at the time. Close