During a recent interview with People, Robin Williams' eldest son, Zak revealed that he still misses the late comedian and continues to mourn the loss of his father who committed suicide four months ago.

"I miss him all the time," Zak revealed. "Often I see something or if I'm watching a film, I think, 'Oh, man, he would have appreciated this' or 'He would have gotten a laugh out of this.' "

Zak also discussed the emotional status of his siblings, Zelda and Cody, explaining that they are also still grieving the tragic death of their father.

"There's not a day that goes by that we don't think about our dad," he continued.

Back in October, Zelda paid tribute to Williams in honor of World Mental Health Day.

Zelda posted a series of tweets encouraging her followers to help "end the stigma," regarding mental health issues. She also encouraged her followers to raise awareness on the disease and donate to mental health charities, including Barrow Neurological Foundation and Hope for the Warriors, E! News reported at the time.

Lastly, Zelda addressed her own father's mental illness, depression. Though Robin ultimately lost his battle with depression and committed suicide in early August, Zelda urged her followers battling with mental illness to "fight on."

Check out her tweets below.

Robin Williams committed suicide earlier this year on Aug. 11. According to TMZ, police later determined that Robin committed suicide by hanging himself with a belt. The late actor died at the age of 63.