(Master Comics 012, 1941)
Triple Threat is in actuality a fellow named Theron who believes that due to his own scientific genius he is above such things as “regular jobs” and “not murdering and robbing at whim” and so develops an armoured multi-environment vehicle – also called Triple Threat, as is often the case with super vehicle types – with which to enact his plans.
The obvious thing to lead with here is that great name: Triple Threat. Some cursory research seems to indicate that in the early 20th Century the term was used to refer to a person etc who could fill three different roles in sports, war etc (I even saw it used to refer to a breed of cow that was useful for meat, dairy and as a work animal). The more narrow entertainment-focused definition that is mostly used today seems to have gained prominence in the mid 20th Century, which is a shame, as it would have been a real fun time if Theron wasn’t just flying around in a land/air/sea vehicle but also singing, dancing and acting.
That said, there is a real flair for the dramatic in ol’ Triple Threat. He’s your classic police taunter style of criminal genius, never missing an opportunity to fire up his radio and sling some mud at Sergeant Kent and the rest of the boys over at police HQ.
It’s this kind of bravado that ultimately proves to be Triple Threat’s downfall, in fact: after escaping an initial encounter with Bulletman, he makes an attempt to eliminate top cop Sergeant Kent and in the subsequent fracas ends up smashing his own vehicle to pieces on Bulletman’s pointy head. A true loss to the community of folks like me who like to read comics about real jerks. On the positive side, Bulletman is knocked out in this collision, which leads to Susan Kent finally learning his secret identity, which then leads to her becoming Bulletgirl, by far the best of the half-dozen or so members of the Bullet-family.
