That's where character design codes in Monster Hunter Wilds come in handy. These are codes you can use to download designs ...

Some ideas for moving Mario's face around have been removed from the real game. A Wario face was also available. It was reworked into the title screen of Super Mario 64 DS, albeit quite differently.

To create a design code in Monster Hunter Wilds, you need to save it first: Open the Character Creator. Create your character. Select the third (and final) tab in the creator to Save/Load your design.