Hau (Masters)

Hau is a character appearing in Pokémon Masters EX and is partnered with Raichu. They are an Electric-type sync pair who have been available since 8/29/19.
Their expanded sync grid has been available since 3/6/20.
Hau's 6★ EX Style has been available since 6/25/22. Raising Hau to 6★ EX also unlocks a song in the Jukebox, also available since 6/25/22.