Jon Favreau Remembers Garry Shandling in Posthumous 'Jungle Book' Role: 'It's Bittersweet to Hear His Voice'

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Jon Favreau got emotional when sharing with ET what it was like to work with Garry Shandling on his last film, The Jungle Book.

Shandling portrayed Senator Stern in Favreau's Iron Man 2 film, and voiced Ikki in The Jungle Book. "[It's] very bittersweet, to be honest with you, to hear his voice in the film, to hear his name," the director said. "I'm glad he's part of it."

WATCH: Garry Shandling’s Apparent Cause of Death Was a Heart Attack

Favreau said he still smiles when remembering his friend. "It's sad that he's gone, but I've been watching his stuff, and thankfully there's such a rich legacy of his creativity and humor," he continued. "I think that more people, if you don't know about Garry Shandling, take a look at his work. It's stupendous."

WATCH: Garry Shandling's Famous Friends Gather at His House to Play Basketball, Remember the Late Star

The filmmaker added that he wasn't ready to say goodbye to the comedian. "I think it took everyone by surprise. [Shandling] was a healthy, great guy who I don't think anyone thought we'd lose him so soon," he explained. "Garry's got a huge place in my heart. ...He would be behind so many people creatively, and give advice and offer suggestions and encouragement -- extremely generous, generous, generous man."

The Jungle Book
hits theaters April 15. Shandling died on March 24 at age 66.

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