Here's a regional evolution I made for Dunsparce, which is meant to be an exclusive for Pokémon Shield. I came up with this design after Sirfetch'd was first revealed, though I was a little busy at the time to work on it.
The Drifter Pokémon
Ability: Sturdy/Run Away
Dunsparce have a shy yet friendly personality. In order to escape the various threats of the Galar region, which even reside in its normal hiding spots like caves and tunnels, it had to burrow even deeper underground to escape any possible signs of conflict. Dunsparce's body adapted over time in order live deep underground and break through various layers of dirt, which eventually led to it evolving into Dransparce.
Dransparce are very heavy and rigged. Its claws and shovel chin allow it burrow through any sediment while its drill-like tail is powerful enough to shatter rocks and various gemstones. When they're not hiding underground, Dransparce travel from place to place, trying to find peaceful areas to stay in like caves, fields, or meadows. Most of the time, they are very shy and skittish, but if you can gain trust they'll be your best friend.
Various authors in the Galar region use this pokémon as inspiration for fairy tales and children's books. One author wrote a well-known story of a Dranspace who refused to do Pokémon battles and preferred to spend all day writing poetry.
Galarian Forms: Dransparce (Dunsparce Galar Evolution)