This Diggersby is a normal/ground-type Pokémon owned by Dolan.
It is Dolan's partner in crime for capturing many Scatterbug and Spewpa and sell them for a good price. Dolan later used it to battle Ash and his Froakie and successfully weakened the Bubble Frog Pokémon despite being part Ground-type. However, Spewpa stepped in and assisted them. During the battle, Spewpa evolved into Vivillon in its Elegant Pattern form and easily defeated Diggersby with a powerful Stun Spore attack.