Green Arrow first appeared in More Fun Comics #73 in 1941. His secret identity is Oliver Queen, billionaire and former mayor of fictional Star City; he is best known to his associates as Ollie. Dressed like Robin Hood, he invents trick arrows with various special functions, such as a glue arrow, a net arrow, explosive arrow, time bomb arrow, grappling arrow, fire extinguishing arrow, flash arrow, tear gas arrow, cryonic arrow, a boxing-glove arrow, and even a kryptonite arrow.