TVB is sometimes subject to criticism by wuxia novel purists who scoff at the company's alterations to storylines and characters in its TV adaptations of wuxia novels, but in some cases, TVB has often been the best friend of underdeveloped, one-dimensional wuxia characters, particularly Jin Yong's. Some of the beneficiaries include...
1). Yeung Hong: No character has benefited more from the TVB treatment than Yeung Hong did from the character's portrayal by Michael Miu in the 1982 adaptation of LOCH. The canonical Yeung Hong was a one-note bad boy with no redeeming qualities whatsoever, and wasn't even particularly good at being bad (e.g. he had plenty of evil intent, but not much ability for making his evil schemes work). The Michael Miu incarnation of the character, however, is someone audiences can sympathize with. Though clearly capable of diabolical evil, the LOCH '82 Yeung Hong was a more multifaceted, multi-layered character than his counterpart in the novel. We could understand his motives even as we deplored his methods. We could see that he had motives beyond mere lust for power and wealth, that he was surprisingly loyal to some people in his life, and that he even had the hint of a conscience and experienced internal conflict as he (more than once) flirted with redemption. The novel's Yeung Hong had none of these qualities, but LOCH 82's depiction of the character did, and was a far superior, more interesting character as a consequence.
2). Gwok Fu: Like Yeung Hong, the canonical novel version of Gwok Fu was a one-note character who had no redeeming qualities whatsoever. She almost seemed designed by Jin Yong for the purpose of offending and drawing the audience's hatred, nothing else. Annie Liu's depiction of the character in ROCH '83, however, allowed audiences to see something that no other interpretation of Gwok Fu (and certainly not the original novel) did: a person whom audiences could feel sympathy towards and whose errant actions were rooted more in insecurity than evil. ROCH '83's Gwok Fu wasn't a bad person at heart. She was, however, self-centered and insecure...mostly because she lacked the talents to live up to the reputation that her family name and parentage carried. In one episode, the ROCH '83 Gwok Fu tearfully admitted to the Mo Brothers that she could not bear to be looked down upon, which was a consequence of her lack of ability to meet the expectations that her heritage placed upon her. Jin Yong never gave Gwok Fu this kind of depth, but TVB, surprisingly, did. Like LOCH '82's Yeung Hong, ROCH '83's Gwok Fu even demonstrated a hint of conscience and self-awareness.
Do you find any other wuxia novel characters whose characterizations were expanded upon and IMPROVED in a TV or movie adaptation?