My Ranking of All 15 Actors That Were Considered for the Role of Mr. Green Ranked from Least Likely to Most Likely to Voice Him In My Opinion

 My ranking of  all 15 actors that were considered for the role of Mr. Green ranked from least likely to Voice him. 

15. Jack Black 

14. Zach Galifianakis 

13. Ed Helms

12. Nathan Lane

11. Bill Hader

10. David Koechner 

9. Patton Oswalt

8. Will Forte

7. Brandy Cooper

6. Jason Lee

5. Justin Long

4. Sam Rockwell

3. Paul Rudd 

2. Will Ferrell 

1. Steve Carell