The dual fire-type and psychic-type Pokemon, Delphox, will be joining the team based battles in Pokemon Unite on both Nintendo Switch and iOS & Android devices. The news was shared by the official Pokemon Unite account and the render for Delphox is looking awesome. Delphox was first introduced in Pokemon X & Y which came out on the Nintendo 3DS system in 2013. European players will be able to get their hands on Delphox in the early hours of 9th June.
Delphox coming to Pokemon Unite on 8th/9th June

This means nothing to me unless Delphox or Greninja can be used on Pokémon violet.
Greninja missing from violet will be a letdown.