Ernie originally appeared as the default Mii for Greenhorne Castle's Serious Soldier role in the demo for Miitopia (Switch). He later appeared in the full game. His Mii data file can be found in
His Mii name in his Mii data file is
His Mii data file does not contain any unused data.
Ernie's role in Miitopia, the Serious Soldier, is described as so:
beans, he'll defend it with his life.
He bears resemblance to a Mii featured in Miitopia (3DS) promotional art, as it seems several of the Miitopia (Switch) Miis do, but without the original Mii data for the Miitopia (3DS) Mii, it's difficult to pick apart differences between the two.
Ernie appears in promotional art for Miitopia (Switch), on the face of the Cerberus monster, along with Clara (Switch) and Rudy. Note that in-game, this monster only takes the faces of some of the player's heroes, while all three faces on this monster are that of default Miis for non-hero roles. Ernie also appears in promotional art on the face of the Robo-"Traveler" and the "Traveler" Woof-o'-the-Wisp.
Below is a screenshot of him in-game as his role in Miitopia.
Here's how to recreate this Mii on the Switch:
US English:
US French:
US Spanish:
EU English:
EU French:
EU Spanish:
EU German:
EU Italian:
EU Dutch:
JP Japanese:
KR Korean:
CN Chinese:
TW Chinese:
Source: Miitopia (Switch)
This is Ernie's Mii Studio code:
You can download Ernie's charinfo-format Mii data file here: charinfo