Urshifu has an interesting quirk, a bit like Silvally and Arceus, where its form is unknowable in team preview. However, unlike those two, Urishifu doesn't really have a "default" form. However, Showdown needs a default form, and Single Strike was chosen, leading team preview to list Urshifu's type as Fighting/Dark, and dubbing the forms "Urshifu" and "Urshifu-Rapid-Strike".
Creating a generic Urshifu form could knock out both the misleading team preview and ugly asymmetry of the names. I say "create a generic form" but internally I imagine it would actually go something like this:
Alternatively, if there's a way to have Fighting/??? and the overworld animation appear in team preview without creating a whole new form, that works too. It wouldn't fix the ugly name imbalance, but there are already plenty of instances of this (Lycanroc, Oricorio, Wormadam, cosmetic stuff like Gastrodon, etc.) so it's not that big of an issue.
Creating a generic Urshifu form could knock out both the misleading team preview and ugly asymmetry of the names. I say "create a generic form" but internally I imagine it would actually go something like this:
- Create a new Urshifu form named "Urshifu-Single-Strike"
- Copy the data from "Urshifu" and put it into "Urshifu-Single-Strike"
- Change "Urshifu" into a generic form
Alternatively, if there's a way to have Fighting/??? and the overworld animation appear in team preview without creating a whole new form, that works too. It wouldn't fix the ugly name imbalance, but there are already plenty of instances of this (Lycanroc, Oricorio, Wormadam, cosmetic stuff like Gastrodon, etc.) so it's not that big of an issue.