The story follows the adventures of Bilbo Baggins, a diminutive creative who resides in a place called Middle-Earth before he is compelled to go on a quest to find a treasure buried deep in the heart of the Lonely Mountain.
| Actor | Role |
|---|---|
 Orson BeanBilbo Baggins (voice) | Bilbo Baggins (voice) |
 John HustonGandalf the Grey (voice) | Gandalf the Grey (voice) |
 Hans ConriedThorin (voice) | Thorin (voice) |
 Richard BooneSmaug (voice) | Smaug (voice) |
 Theodore GottliebGollum (voice) | Gollum (voice) |
 Otto PremingerElvenking (voice) | Elvenking (voice) |
 Cyril RitchardElrond (voice) | Elrond (voice) |
 Paul FreesBombur/Troll #1 (voice) | Bombur/Troll #1 (voice) |
 Don MessickBalin/Troll #3/Goblin/Lord of the Eagles (voice) | Balin/Troll #3/Goblin/Lord of the Eagles (voice) |
 John StephensonDori/Great Goblin/Bard (voice) | Dori/Great Goblin/Bard (voice) |
| JJack DeLeonDwalin / Fíli / Kíli / Óin / Glóin / Ori / Nori / Bifur (voice) | Dwalin / Fíli / Kíli / Óin / Glóin / Ori / Nori / Bifur (voice) |
 Glenn YarbroughThe Balladeer (voice) | The Balladeer (voice) |
 Thurl RavenscroftGoblin (voice) | Goblin (voice) |