system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Can you estimate how many Doombots are out there and how many have been discovered so far?
gpt
In Fantastic Four #350, we see the culmination of a civil war for control of Latveria between Dr. Doom, and his adopted son Kristoff, who has been implanted with Doom's memories and personality. 

At the height of their battle, the *real* Doctor Doom returns, deactivates the one who had been fighting, and reveals that he's been off exploring the multiverse for years, and that most Doom appearances since Fantastic Four #40 had been Doombots. Not quite all of them - he says he has returned a handful of times over the years. 

Thus, any Doom story you think is awesome was the real Doom; everything else was a Doombot.