Zak Williams, son of the late actor and comedian Robin Williams, paid tribute to the iconic performer on social media in honor of his birthday.

But to his kids, Zak, Zelda and Cody, he was "just Robin," a happy-go-lucky father who delighted in collecting comic books and toys, riding his bike and making his children giggle.

Robin Williams in 2007. AP On Sunday, Robin’s daughter spoke out on the 10-year anniversary of her dad’s death to shut down a rumor that the late actor owned a pet monkey. Zelda responded to a ...

Since Robin's death at age 63 in 2014, Zak — along with his siblings Zelda, 35, and Cody, 33 — have made it their mission to carry on their dad's legacy of philanthropy. "It was deeply ...

Zak Williams, the eldest son of Robin Williams, shared a moving message to his dad on Instagram on Monday, which would’ve been the elder Williams’ 74th birthday. “My father lived to make ...

Robin Williams' grown children Zak (from left), Zelda and Cody throw out the ceremonial first pitch before Game 5 of the 2014 World Series on Oct. 26, 2014.