Originally posted by Darth Subjekt
When did Dooku plan to betray Sidious? He was Sidious' b1tch...sorry Ox, 🙁. But no, he never expressed the notion to overthrow him, that i'm aware of at least.
Had Obi-Wan joined Dooku in AOTC, Dooku would have definitely tried to overthrow Sidious. Remember, he ratted out out Sidious to Obi-Wan without hesitation when he told him pretty much everything that was going on with the Seante. It's the Sith way. The same way Vader was trying to get Luke to help him overthrow Sidious.