R.I.P. Mr. Drummond! The actor who played Arnold’s adopted dad on “Diff’rent Strokes” has headed to heaven to join his Hollywood son Gary Coleman.

Via TMZ reports:

Actor Conrad Bain — who famously played father figure Phillip Drummond on “Diff’rent Strokes” — has passed away. He was 89.

Bain family sources tell TMZ, Bain died Monday night at a retirement home in Livermore, CA. So far, details surrounding his death are unclear.

We spoke with Bain’s daughter Jennifer who tells us, “He was an amazing person. He was a lot like Mr. Drummond, but much more interesting in real life. He was an amazing father.”

Bain — who became a household name starring opposite Gary Coleman and Todd Bridges on the iconic 80s series — is survived by his three sons and one daughter. He also has a surviving twin brother Bonar Bain.

Sad news but it sounds like he lived a full life. Our condolences to Bain’s family!

R.I.P.