I needed a dark-type Pokémon as a counter against Lunala and Yveltal, which were not dealt with as part of the main core. Incineroar was excluded from the options first of all. This was mainly because it was too popular, targeted by everyone, and weak to their pair legendaries: Kyogre, Groudon, and sometimes even Rayquaza. Incineroar didn’t fit this team as it rarely fought positioning battles.

Then I searched for another dark-type Pokemon. First I picked Mandibuzz, which is not weak to Groudon and Kyogre, provides speed control by Tailwind, and ha a winning-condition with Roost.

However, I found it useless when it was ignored. Mandibuzz mainly uses Foul Play to deal damage but it does nothing against pairing such as Fini + Incineroar, so puts a large burden on its partner. Its weakness to Rock-type moves, like Incineroar, is also bad as it can be knocked out by Stakataka – which was often paired with Lunala and Yveltal. I still considered bulky dark-type Pokemon fine. I looked for Mandibuzz with no such faults and I found Umbreon.

Umbreon is a bulky dark-type like Mandibuzz, has a win condition with Moonlight, and doesn’t have weakness to Rock-type moves. Additionally it can make its partner’s move more powerful with Helping Hand and put pressure on the opponents, so it doesn’t matter if it is ignored. It’s like attacking through its partner.

Although it has its weakness to Fighting-type in common with Incineroar, I didn’t considered it a problem because there are no Fighting-type Pokemon in the metagame, and Necrozma/Tapu Lele/Salamence were extremely strong against Fighting-types if I were to see any.