(CNN) -- Tributes to "Green Mile" actor Michael Clarke Duncan poured in Monday, September 3rd on Twitter as word of his death spread.
Here's how some celebrities and people who knew Duncan remembered him:
Adam Baldwin, actor
"R.I.P. dear Michael. We were all honored & priviliged to know you & work with you on 'Chuck.' Farewell, gentle giant."
Zachary Levi, actor
"Blessed to have had the opportunity to work with Michael Clarke Duncan while he was still with us. He was a kind soul that will be missed."
Roger Ebert, film critic
"Michael Clarke Duncan passes at 54. A striking screen presence."
MC Hammer, rapper
"One of the best among Men on earth. A gentle Giant. Loved him. Pure class and grace. RIP my friend."
Terry Crews, actor
"Rest in Peace to my brother who paved the way for me and many Black actors, Michael Clarke Duncan."
Jordin Sparks, singer and actress
"RIP Michael Clarke Duncan. Thank you for being so kind to me & for sharing your talent with the world. You will be truly missed."