Nintendo fans who have purchased a copy of Pokémon Let's Go Pikachu or Pokémon Let's Go Eevee are able to get a free Partner Pikachu or Partner Eevee Spirit in their copy of Super Smash Bros. Ultimate. However, these specific Spirits aren't obtainable in the game quite yet—you'll need to wait until December 14 before they can be unlocked.
To get them for free, all you need is to have save data from either Pokémon Let's Go Pikachu or Pokémon Let's Go Eevee on your Nintendo Switch. The spirit that you get depends on which version of the game you have, but you can get them both if you own both games, respectively.
If you don't have Pokémon Let's Go Pikachu or Pokémon Let's Go Eevee, then don't worry! The Partner Pikachu and Partner Eevee Spirits are still obtainable for those who don't have save data, but only by completing challenges that correlate to these specific Spirits.
Nintendo will have further details on how to obtain Partner Pikachu and Partner Eevee in the very near future.
The Partner Pikachu and Partner Eevee Spirits both are Ace Support Spirits, and pretty powerful! Partner Pikachu boosts your damage and speed while you remain undamaged. Partner Eevee gives you greatly increased attack and defense after eating food.
For those who aren't too familiar with the Spirits system yet, they're basically background characters that aren't fighters, but you can equip them onto your fighters for power boosts. You obtain them primarily through the World of Light story mode, but you can also get some from Classic runs.
Every character can have a few Spirits equipped at a time, with a Primary one and three Support level ones. They all obtain experience points as you use them and can go all the way to level 99, boosting their potency as they grow. Other ways of obtaining experience points involve training them at the dojo, feeding them snacks, or sending them out to find treasure.
