Iron Fist is not weak in the comics. His martial arts skills and chi-powered abilities give him an edge. Sometimes, his effectiveness might be influenced by the circumstances and the villains he's up against.
Iron Fist wasn't Asian in the original comic version. The character was originally created and portrayed as a non-Asian. However, there have been discussions and calls for more diverse representations in comics over time.
In most comic storylines, Iron Fist isn't Asian. The character has a specific origin and ethnicity that differs from being Asian. However, there might be alternate universes or special story arcs where this could potentially change.
Danny Rand is the central figure in the Iron Fist original story. He is the protagonist who undergoes the journey to become the Iron Fist. Colleen Wing is an important character as well. She has her own martial arts skills and she and Danny form a connection. Another character is Ward Meachum, who has a complex relationship with Danny, sometimes being an adversary and sometimes having a more nuanced role in the story.