The plane was crewed by multiple people so you can’t really say one person dropped the bomb. I’m sure there was a guy who pushed a button or pulled a lever but he wouldn’t have been there without the pilot and navigator and radio operator and so on.
5,833.3 per person is still not to be sniffed at.
The inventor of gunpowder ?(Sorry thats indirect)
I still think its one of the big three, probably Mao first, then Stalin, then Hitler.
Lenin is supposed to have been responsible for quite a few deaths also.
I think in terms of actually pulling the trigger, nobody will beat the person who pushed the lever that dropped the atomic bombs.
Next biggest killer I can think of would be Elizabeth Bathory, who was rumored to have killed 600, but only convicted of 200.
I too would give the title to the droppers of the atomic bombs.
Second up would be Vasili Blokhin, who personally executed up to 7,000 people at Katyn (and probably hundreds of others in his career as well.)
I wonder where Christopher Columbus ranks. Granted, Europeans would have reached the Americas eventually, but his 1492 trip started a rash of exploration and colonization that resulted in the deaths of massive numbers of native Americans, whether through disease or conflict.
you beat me to it.
Julius Caesar once claimed to have slaughtered 200,000+ Helvetians in a single encounter; it’s estimated that his Gallic Wars took 1 million lives. The world population was about ten times higher in the time of Hitler and Stalin compared with Caesar’s time, so Caesar’s 1 million would correspond to Hitler’s 10 million as a percentage of total population.
There may have been ancient “killers” deadlier than Caesar; I mention him just because he’s well known.
It may have taken a bit longer, but the car would have become commonplace without Ford.
Mother Nature invented alcohol. she is the biggest killer of all.
Well, if we step back the level of directness a bit, any member of the brass who ordered the firebombing of a major city in WW2 was probably in the same league, or had even bloodier hands. Dresden, Tokyo, and so on.
Surely there were guards in concentration camps who killed more people than 5,833 people via direct methods such as shooting and gassing? We may not know names, but with thousands of people being gassed a day…
In fact, it looks like Dr. Mengele may have those pilots beat. Even if you don’t count people who were killed on his direct orders (which could easily be 1 million), we know that he was actively involved in his generally fatal experiments. Something more than 5,000 people were killed in those experiments alone. It is reported that he often shot people who resisted his decisions in sorting them out, walked children to the gas chamber himself, showed doctors how to kill, etc. So even if you require his hand on the button/gun/needle/etc for a victim to count, I think it’s a safe bet that there were more than 6,000.
As a pendant to this thread, cracked.com lists six peoplewho, directly, each were individually responsible for saving millions of lives.
How about this: We look at each death as though it were a crime, and ask who would be charged with murder in that case? The crew of the Enola Gay all had a direct enough involvement in the bombing of Hiroshima to have been charged with murder, were it a crime, as would the high brass who ordered it, but the riveter in the factory who made the plane would not be.
Yeah, but that would exclude my nomination, so I’m against it 
How about all the scientists who designed and built the bomb?
Then we can mention Cain, who wiped out 25% of the world’s population.
Though you could say he SAVED billions of lives. If instead of CFCs humans used other related chemicals for the same purposes (that deplete ozone orders of magnitude faster than CFCs), then by the time anyone even knew what was going on the ozone layer would have been destroyed, and billions would have died.
If it does, then I nominate FDR for Lend-Lease to Stalin. 
First would have to be Washington. Who knows how many Brits and loyalists he was responsible for? And indirectly, he’s been responsible for every American war since.
Then I suppose Lincoln, for America’s deadliest war.
Or maybe Jackson, for setting the trends his successors followed on treatment of Native Americans.