You can Murder or imprison difficult vassals, but in general, you should keep them weak to make them easier to control.
Method 1: Increase Powerful Vassal Opinion
Powerful vassals who are not council members receive a -40 opinion modifier when they want to sit on the council. ..
You can counteract this debuff by swaying vassals, gifting items or gold, or by various other friendly actions.
The idea of befriending vassals is a great one, as it provides a large opinion boost.
You can start befriending schemes on other characters by taking the Befriend perk from the Family Hierarch Diplomacy tree. ..
Method 2: Prioritize The Strongest Vassals
While you may want to give council seats to vassals with the best stats, you might have to prioritize the strongest vassals who dislike you.
This move can stop the vassals from joining factions and potentially prevent them from becoming a part of the government.
If a powerful vassal declares war on you, your faction may activate and allow them to do the same.
If you want to stay alive, choose someone who dislikes you. They have a higher chance of killing you in a plot, so it’s better to avoid them.
Method 3: Kill Or Imprison Vassals
If you find yourself in a situation where your vassals are starting to act against you, consider using one of the following methods: killing them, imprisoning them, or forcing them into exile. ..
Murdering Vassals
To kill a character in Crusader Kings II you can begin a Murder Plot in the Intrigue tab. If your character is Intrigue focused this will be much easier to complete. ..
This is the most effective way to keep your secrets.
Your vassal’s heir should inherit if they are a child who can’t demand a spot on the council yet.
Imprisoning Vassals
If your powerful vassals are imprisoned, they won’t demand a council position. Imprisoned characters can’t join factions.
If you arrest your vassals, they may rebel and attack you along with any other vassals who dislike you.
Using a hook will help you capture someone’s attention without resistance. ..
After winning a faction war, your rebelling vassals will be imprisoned. If some of them cause you a lot of trouble, feel free to keep them there! ..
How To Weaken Vassals
Weaknesses in your vassals can make them difficult to control, which can lead to problems. weakening them could help you stay in control and avoid problems.
You could revoke their titles if they’re criminals or if they’re in prison, where they can’t refuse. ..
If you have a Feudal government, be sure to check the Forced Partition option in your feudal contract. This will help to avoid vassals collecting land over several generations. ..
A vassal with many allies could be murdered, potentially weakening their alliance network and making them more vulnerable to attack. ..
An alliance could be broken by killing one of the married characters who formed the alliance.
