S. Epatha Merkerson has shared some heartfelt memories of her time working with the late Paul Reubens, hours after news broke that the beloved Pee-wee Herman actor died after a private battle with cancer.

"I always called him Pablo," Merkerson wrote in a statement to EW. "I will truly miss my friend." Merkerson made her TV debut as Reba the Mail Lady on Pee-wee's Playhouse in 1986. She currently stars in the NBC series Chicago Med.