system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Which of the Avengers has the highest body count?

Recently I began noticing a bit of a distinction between the Defenders and the Avengers. The latter seem to go as far as needs be to get the job done, whereas the former seem to insist that some lines shouldn't be crossed. As such we have two of the Defenders (Daredevil, Luke Cage) having no fatalities on their belts, one with three kills and a whole lot of mental anguish for it (Jessica Jones), and one whose kill count is unspecified despite no particular aversion to it (Iron Fist).

In the Avengers, it seems all of the members are fine with killing sentient life. Of course seeing as Cap was a soldier, Widow and Hawkeye were assassins/government spies, Hulk is a rage monster and Thor was (or still is) the foremost fighter of a proud warrior race, fatalities are to be expected (though Iron Man going from businessman to mass murderer for justice is a bit different). 

So which of the Avengers (or any of the MCU heroes for that matter) has the highest body count *of sentient beings*? Namely anything living with enough consciousness to categorise it as sentient (so Chitauri are valid, but Ultron bots are not). And furthermore, **do we have any figures for how many kills everyone has to their name**?
gpt
Thor says he's 1500 years old and has killed twice that many, but given his age, and his experience as a warrior, he's probably far understating.

The next runner up after Thor is probably Tony. All the ones he killed in the Middle East, plus Stane and Killian (and Killian's goons) plus the Chitauri.

The others, we don't know. Clint and Nat were both assassins, so they probably both have a decent number of kills.

Cap probably has a couple hundred kills at best including his campaign in WW2 and the events of Winter Soldier.