soviet
Hero
People keep repeating this sort of thing, and it frankly nonsense. That you have a defined mental model of the character does not mean they cannot be persuaded or affected or that you cannot be surprised. It if is just utterly bizarre to me that people would think this. The character will be subjected to situations beyond their control, and those will impact them and they will produce reactions, sometimes surprising ones. Just like happens to people in the real life.
When you say 'they' and 'them' here I don't know whether you mean the character or the player.
The character does not exist and so makes no decisions.
The player does exist and so makes all the decisions.
This means that the character cannot be persuaded by in-character conversation, only the player can (while assuming the role of the character). It means the character cannot react to anything, only the player can (while assuming the role of the character). Nothing can affect or persuade that character without first crossing the threshold of 'the player says it is OK'. Therefore, the player cannot ever be surprised by the character's feelings or reactions, because they have decided them.






