'''Ah Ku''' (also rendered as "'''Ah-Ku'''" in some stories) was a Chinese crime boss who was based in New York City. In her first appearance, she approached Bob Phantom pretending to be a "Princess" who was concerned that many illegally smuggled Chinese immigrants were turning up dead. But as Bob eventually discovered, she was actually the ruthless mastermind behind both the smuggling and the deaths, employing the opportunistic hi-jacker Trigger Slumm.

Later appearances showed her selling opium, killing rivals and generally engaged in all sorts of criminal activities. She was utterly ruthless, ordering murders and letting her own henchmen take the fall for her without a second thought. In her first three appearances, she commanded a mixed-race gang.

In Top-Notch Comics #9, her gang was made of Chinese immigrants. This issue saw what was arguably her most ambitious scheme yet - an attempt to covertly take over all criminal operations in New York's Chinatown. She was stopped by Bob Phantom at every turn, but she managed to get away before she could be arrested until her final appearance.

*Top-Notch Comics #4-6, 9
Category:Comic Book Characters
Category:Femmes fatales
Category:MLJ Characters
Category:1940 Debuts
Category:Harry Shorten - Creator
Category:Irv Novick - Creator
Category:Chinese American Characters
Category:Criminal Masterminds
Category:Female Villains
Category:Gwandanaland Characters