Razor Fist was created by Doug Moench and Gene Day.
Trivia[]
A deleted scene from Shang-Chi and the Legend of the Ten Rings revealed that Razor Fist's real name is Mattias, and that he was adopted by Wenwu after Shang-Chi had run away.
In the comic books, Razor Fist had both hands replaced with simple blades, which made life doing anything apart from hand-to-hand combat nigh-impossible for him without help, which is why the MCU version has a blade in only one hand.