I managed to make it work using a really hacky way.
I created a CharacterBP and an AICharacterBP (copy pasted from the Character of the Top Down template). Then on event begin play of the Character, I attach its Camera to the AICharacter. Then, when I ask for a move on the Controller, I order my AICharacter to move using AI move to (instead of the Character).
It works but it’s far from ideal since you loose every benefit of using a player character and it’s a mess to implement in an already existing project.