The Monkey King: The Legend Begins is the re-imagined version by Hollywood of the film The Monkey King: Havoc in Heavens Palace, the origin and birthplace of The Monkey King Story.
| Actor | Role |
|---|---|
 Donnie YenSun Wukong / Monkey King | Sun Wukong / Monkey King |
 Chow Yun-FatJade Emperor | Jade Emperor |
 Aaron Kwok Fu-ShingBuffalo Demon King | Buffalo Demon King |
 Peter HoErlangshen | Erlangshen |
 Hai YitianMaster Subhuti | Master Subhuti |
 Kelly Chen Hui-LinGoddess of Mercy / Guanyin | Goddess of Mercy / Guanyin |
 Calvin ChengNezha | Nezha |
 Cheung Siu-faiHeavenly King (as Siu-Fai Cheung) | Heavenly King (as Siu-Fai Cheung) |
 Kei GambitSun Wukong (voice: English version) | Sun Wukong (voice: English version) |
 Lo Chung-HimSha Wujing (as Chung Him Law) | Sha Wujing (as Chung Him Law) |
 Xia ZitongRuxue | Ruxue |
 Zhang ZilinGoddess Nu Wa | Goddess Nu Wa |