Robert Downey Jr.is remembering his father Robert Downey Sr. 

In a post shared to Instagram on July 7, the Iron Man star revealed his dad passed away at the age of 85 following a battle with Parkinson's disease.

"RIP Bob D. Sr. 1936-2021…" Downey Jr. wrote. "Last night, dad passed peacefully in his sleep after years of enduring the ravages of Parkinson's ..he was a true maverick filmmaker, and remained remarkably optimistic throughout..According to my stepmoms calculations, they were happily married for just over 2000 years. Rosemary Rogers-Downey, you are a saint, and our thoughts and prayers are with you."