Information about how to recruit Mercedes in Fire Emblem Three Hopes.
In Fire Emblem Three Houses you could recruit many characters simply by getting specific stats and skills high enough. Once done, they’d be impressed enough to realize that studying under you would suit them better than petty considerations such as life-long friendships, national loyalty, familial duty or even religious conviction.
Unfortunately characters in Fire Emblem Three Hopes aren’t quite as malleable - some characters will join your faction as you progress the Main Questline, usually due to story contrivances entirely outside of your control. The rest, however, must be met in battle and “persuaded” to join you… often by lumping them on the head enough times to realize that they’d be better off defecting than decomposing.
Character Recruitment Strategies
In the case where a character can be persuaded to join you, this “persuasion” effort is achieved via the deployment of a Strategy. When you start a battle in which a character can be recruited you’ll first have to pick from a variety of available [Strategies]. You can find more information about Strategies on their own page, but for the purposes of recruiting characters you’ll be interested in any “Persuade [Character]” Strategies, which you must select prior to the battle to ensure you can utilize said Strategy(ies) during the battle. Deploying Strategies in turn require you to expend Strategy Resources, a currency gained by completing [Side Quests] during the chapter leading up to the Main Quest where enemy characters can be recruited.
During battle, when the character you wish to recruit spawns you must activate the Strategy to persuade them by entering the battle menu before you defeat them. If you defeat them without activating the Strategy - even if you selected it before the battle - they will die and you will not be able to recruit that character for the rest of the playthrough! Once the Strategy has been activated, the area where the Strategy is in effect (usually where the target character spawned) will be surrounded by a purple glow. Merely defeat them in this area and you’ll recruit the character.
How to Recruit Mercedes in the Scarlet Blaze Route
During the Main Quest in Chapter 8, you will be able to deploy the Persuade Mercedes Strategy by expending 20 Strategy Resources. You should have a total of 60 Strategy Resources if you capture all of the regions prior to beginning the Main Quest. She will actually be on the map from the beginning of the battle, although you won’t be able to reach her just yet, unless you go through some traps. It’s best to stick to the missions, with the first side mission asking you to hit some switches in the bottom corner strongholds.
Doing this will open up a gate towards the bottom center of the map, allowing you to avoid the trap-ridden path to the west of it. Once you do this, the next main mission will ask you to disable the controls in the city streets. There will be two more strongholds here that you need to capture. The eastern of the two that are highlighted is where you will find Mercedes. Make sure you activate the Strategy before defeating her, otherwise she will die.
How to Recruit Mercedes in the Azure Gleam Route
Mercedes is one of the characters you will have from the beginning, if you decide to choose the Blue Lions near the beginning of the game.
How to Recruit Mercedes in the Golden Wildfire Route
Mercedes is one of the characters that cannot be recruited in the Golden Wildfire Route.