It's more a mix between the two, and Sakharov is the one who did the picking. Kruglov acted as an adviser and was the one who sent the messages. Sakharov didn't want just any stalker, but he needed men. There are others who got the message, but not many others, who decided not to come, and they may or may not be introduced later on. :p

Also, your tentacle trip bit was absolutely hilarious. FOR SCIENCE!!!