As a Chinese, I have to state something: 1. Zhaoyun (Zilong) was a general in the Three Kingdoms period. 2. Chang'e is the wife of Houyi in mythology. She swallowed the "elixir of immortality" (I don't have specific translation btw) and came to the moon. 3. Sun Wukong is a character in the novel, also a monkey holding Ruyi Jingu Bang (Golden Staff). In summary, these three characters are not original products of the game, but they are created as game characters by many games.