But I also think, Dorry/Broggy are about as strong of a character that Imu can take over. (For people saying why Imu doesn't attack Yonkos)
1.8 bill level characters are borderline CoC users. Hancock at 1.6 bill already has it. Zoro at 1.1 bill has it. Katakuri at 1.057 bill too. There are some like Law and Croc, but I think Law for one would be forced to unlock it at that point.
I think there is
0 chance Imu can control CoC users. Otherwise, Doffy would be controlled by him. They wouldn't send assassins.