Yes, you can change nicknames in Tomodachi Life, but only before your Mii moves into the apartment

Once a Mii moves in and starts living in your apartment, their nickname is locked. You cannot edit it through the normal game menus. The only way to change a nickname after that point is to delete the Mii entirely and recreate them with the new nickname you want.

If you catch the nickname before the Mii moves in — during the initial setup when they first arrive — you can edit it directly. This is the only window where the game lets you modify a nickname without losing the Mii's data and progress.

Key Takeaways

  • Nicknames can only be changed during the initial Mii setup, before they move into the apartment.
  • Once a Mii is living in your apartment, their nickname becomes permanent and cannot be edited through the game menu.
  • Deleting a Mii and recreating them is the only way to change a nickname after they have moved in, but you will lose all their relationship data and progress.
  • The nickname field appears on the same screen where you set the Mii's personality type and living preferences.

How to edit a nickname during initial setup

When a new Mii first arrives at your apartment, the game walks you through a setup screen. On this screen you will see fields for the Mii's name, nickname, personality type, and favorite color. The nickname field is editable at this stage — tap it, clear the current text, and type the new nickname you want.

The nickname can be up to 10 characters long. Once you confirm and move forward, the Mii will move into the apartment and the nickname becomes locked. If you do not change it during this window, you have missed your chance to edit it without consequences.

Why nicknames lock after move-in

Tomodachi Life ties nicknames to the Mii's internal data once they settle into the apartment. The game uses the nickname in dialogue, in relationship events, and in the apartment interactions. Allowing players to change it mid-game would create inconsistencies in how the Mii is referred to across different scenes and events.

This design choice also encourages players to think through their nickname choice before committing. Unlike the Mii's appearance, which can be edited anytime through the Mii Maker, the nickname is treated as a permanent part of the Mii's identity once they move in.

What happens if you delete and recreate a Mii

If you delete a Mii to change their nickname, you start from scratch. The new version of that Mii will have no relationship data, no memories of events, and no progress toward any goals they were working on. Any friendships, romances, or family connections involving that Mii will be erased.

This is a significant loss if the Mii has been living in your apartment for a while. For that reason, most players only delete and recreate a Mii if the nickname mistake was caught very early, before much gameplay had passed.

How to avoid nickname regret

Take a moment before confirming the initial setup. Read the nickname out loud to yourself — does it still sound good? Is it spelled the way you want it? Will you still like it after hearing it dozens of times in dialogue?

Common regrets include typos, nicknames that are too long and get cut off in some menus, or nicknames that made sense as a joke but feel stale after a few hours of gameplay. The setup screen is the only place you get to fix these without losing the Mii entirely.

Nicknames versus the Mii's actual name

The nickname is separate from the Mii's actual name. Both appear in the game, but in different contexts. The actual name is what shows up in formal situations and menus. The nickname is what other Miis call them in conversation and what appears in relationship events.

You can change the actual name anytime through the Mii Maker — that setting is not locked. Only the nickname is permanent after move-in. If you want to change what other Miis call someone, you have to delete and recreate them.

Frequently Asked Questions

Can I change a nickname through the Mii Maker after the Mii moves in?

No. The Mii Maker lets you edit the Mii's appearance and actual name, but the nickname field is grayed out or unavailable once the Mii is living in your apartment. The nickname is controlled by Tomodachi Life itself, not by the Mii Maker.

What if I made a typo in the nickname?

If the typo was caught during initial setup, before the Mii moved in, you can still edit it. If the Mii is already living in the apartment, you would need to delete them and recreate them to fix the typo. For a single letter mistake, many players decide it is not worth losing all the Mii's progress.

Do I have to use the suggested nickname, or can I create my own?

You can create your own nickname. The game suggests one based on the Mii's name, but the nickname field is completely editable. You can replace it with anything you want, as long as it fits within the character limit.

How long can a nickname be?

Nicknames can be up to 10 characters long, including spaces and punctuation. If you try to enter something longer, the game will not let you confirm the setup.