Whoever is operating the Death Bot is paying a lot of money to buy high and sell low. Why? One possible reason is to test market price and order resiliency. This person likely has a massive amount of cash and coins to control and the Death Bot is merely an operating expense.
This is very different than Willy. It's shown up on multiple exchanges, so it's probably not an exchange operator. That's a good sign, but it means the market is getting more sophisticated. Smart people are taking money from dumb people and I'm getting the sinking feeling that I'm one of the dumb people.
I don't have enough information to trade, so I'm not going to.
What methods did you use to identify him?