Fortunately for me, the Wandering Samurai is the only existing spirit without a battle so he's the only old one I have to come up with a battle for.
The Wandering Samurai
Type: Attack
Class: Advanced
Slots: 2
Ability: Enhanceable
Fighter/Stage:
in Omega Form Bridge of Eldin
Conditions:
- Hostile assist trophies (Takamaru) will appear
- The enemy favors side special attacks
This one should be simple enough. Takamaru shows off how much of a samurai battle this is. Chrom constantly using Dancing Blade references the Samurai's whirldwind slice.
Now for the new ones.
Sneaky Spirits
Type: Shield (Fight)/Support
Class: Novice
Slots: 1
Ability: Braking Ability+
Fighter/Stage: 4
's in Onette
Conditions:
- Timed battle
- The enemy will occassionally be invisible
These spirits make a return from Smash Run as spirits! Get them before time runs out without losing track of where they are.
Tap Trial Dancers
Type: Grab (Battle)/Support
Class: Legend
Slots: 1
Ability: Foot Attack +++
Fighter/Stage:
and 2
's in Omega Form Fruit Basket
Conditions:
- Only certain Pokemon (Alolan Exeggutor) will emerge from Poke Balls
- The enemies' kicks and knee strikes have increased power
- High gravity
The Tap Trial girl and monkeys will serve as the legend spirit for Rhythm Heaven. Even the giraffe joins the fray through Alolan Exeggutor.
The Blue Birds
Type: Attack
Class: Advanced
Slots: 3
Ability: None
Fighter/Stage: 1 Small
and 3
's in Battlefield Shadow Moses Island
Conditions:
- Defeat the main fighter to win
- The enemies favor tilt attacks
You might only have to take out Captain Blue Bird to win this fight, but the Blue Birds' pecking training won't be for nothing as they'll be relentlessly protecting their captain.
Airboarders
Type: Defense (Battle)/Support
Class: Advanced
Slots: 2
Ability: Jump +
Fighter/Stage: 3
's in Big Blue
Conditions:
- The enemies can deal damage by dashing into you
- The enemies deals damage when falling
Watch for the Airboarders as they'll be charging at you from all angles. Big Blue's constant movement will probably not help matters either.
Marshal, Cam, and Miss Ribbon
Type: Neutral
Class: Ace
Slots: 3
Ability: None
Fighter/Stage:
,
, and
in Fountain of Dreams
Conditions:
- Defeat the main fighter to win
- Villager loves to jump
- Mr. Game and Watch favors side special
The mascots of Fever will provide a hectic battle as Marshal constantly hops around while Cam and Miss Ribbon try to take you out, with Cam in particular having the chance to take you out with a 9.
Huebirds of Happiness
Type: Attack (Battle)/Support
Class: Novice
Slots: 1
Ability: Impact Run
Fighter/Stage: 4
's in Golden Plains
Conditions:
- Take your strongest team into this no-frills battle
Tweet, twe-twe-tweet, twee-tweet, SQUAWK!
Translator Tom and Martian
Type: Grab
Class: Novice
Slots: 2
Ability: None
Fighter/Stage:
and
in Lylat Cruise
Conditions:
How fortunate that the Martian won't be introducing you to its leader in this spirit battle. Easy and simple battle.
Kitties!
Type: Grab (Battle)/Support
Class: Novice
Slots: 1
Ability: Lightweight
Fighter/Stage: 3
's in Pictochat
Conditions:
- The enemies favor special attacks
- The enemies love to taunt
These fellas are too focused on their dance to be fighting you. Don' get too close to them while they're spinning, though.
Beary
Type: Defense (Battle)/Support
Class: Ace
Slots: 2
Ability: Stats after Eating++
Fighter/Stage:
in Dreamland
Conditions:
- Items are attracted to the enemy
- The enemy has increased attack after eating
- Certain items will appear in large numbers
Poor Beary is eating his sorrows during this battle. ): Wake him up from this nightmare.
And that's it for the spirits. While there are some missing characters I could've included (Clappy Trio, the Lockstep guys, MC Adore, etc.) I feel like these characters make for enough fun references and battles.