Boomerangs: Digger carries several boomerangs hidden on his costume, each with special properties. Unless otherwise noted, they are of Excellent material strength. Harkness can throw these so they will return to him with no risk of damaging himself.
Electro-boomerang: Emit spark trails carrying a deadly 5,000 volts (Amazing energy damage), which circle around the target.
Exploso-boomerang: Detonates on contact, Amazing damage to all in one area.
Gas boomerang: Monstrous intensity tear gas, affects one area.
Razor boomerang: Incredible material strength, inflict Remarkable Edged throwing damage.
Bladed boomerang: Incredible Edged throwing damage, no affect on Body Armor of Good and higher material strength.
Sonic boomerang: Excellent intensity sonic attack.
Gravity boomerang: Creates local gravity field of Incredible intensity.
Weighted boomerangs: Solid-weighted boomerang. Bull’s-eye result on Blunt Throwing column indicates target must check for Stun or be knocked over.
Preprogrammed boomerangs: These boomerangs are rocket propelled and are preprogrammed to fly to a target, pick up whatever item and returned to a predesignated spot with amazing flight speed and range.
Note: Captain Boomerang has even made giant boomerangs, and dimensional spanning boomerangs.
Thown Objects, Weapon Specialist: Boomerangs
Digger Harkness was an Australian expert with the boomerang. He was hired by a corporation named the Wiggins toy company to be their new spokesman for their company. Mr.Wiggins gave him his current costume. Wiggins wanted to showcase his newest toy, “the Wiggins boomerang”. As Captain Boomerang, he went on tour to do special public events showing off his Amazing skill with the Wiggins boomerang. Secretly he had preprogrammed boomerangs commit robberies while in public view during those events. Flash realized that the robberies took place during his public events in every city he attended. Flash put two and two together and tracked down the boomerangs to harkness and caught him red handed. Later he battled Flash many, many times. He even joined the Suicide Squad for a while. His current whereabouts are unknown.