All Yokai Locations (Mysterious)

Rank E
Brokenbrella-Under Cars in Snowbush

Pittapat-Fox Shrine Road in Past Springdale

Snotsolong-River Shallows in Uptown Springdale

Dwanna-Tranquility Apartments

Wazzat-Uptown Springdale (Trees)

Dummkap-Chance of finding one while battling Wazzat

Miiama-

Zip Unlock-

Kuchisuberashi (Name Not Final)-

To What To Who-

Nandenaan (Name Not Final)

Rank D
Duchoo-Mt. Wildwood Trail (Trees)

Faysoff-Dream Universe (Upsidown Singvale Trees)

Laffalotta-Old Mansion in Blossom Heights (Patches of Grass)

Tattletell-Befriended through Storyline at Dreamer's Field

Cupistol-Found in trees outside Performer's Stage

So-Sorree-Use A Wind Excitement Coin on the Crank-a-kai

Smogling-Found in the Rice Fields in Harrisville

Signibble-Abandoned Tunnel (West) and in Shoppers Row

Snottle-When riding the train from Ridgemont to Bayside, there is a small chance that Snottle will appear and ask to battle

Absordem

Hijouguchi (Name Not Final)-

Marunugget

Cornfused

Unshelltered

Rank C
N'more-Evolve Dwanna

Q'wit-Found Rarely at the Stone House in Breezy Hills at Night

Blips-Appears in Trees in Ridgemont

Skranny-Found in Downtown Springdale (Under Cars)

Failian-Sweet Meadow (Under Cars)

Apelican-Use Bird Excitement Coin on Crank-a-kai

Mirapo-Befriended through Storyline in Chapter 4

Illoo-Mt. Wildwood (Trees)

Elloo-Can be found along with Illoo in battles

Lurtrap

Fuu2

Sutton-kyou (Name Not Final)

Yeeey

Rainbone

Peraperaion (Name Not Final)

Yoganalisten

Rank B
Houzzat-Evolve Wazzat

Tattlecast-Fuse Tattletell with Laffalotta

Alloo-Mt. Wildwood Summit

Espy-Shoppers Row (Grass)

Infour-Sweet Meadow (Grass Patches)

Verygoodsir-Excellent Tower (Trees)

Stanturn

Seidenki (Name Not Final)

Professor Plumage 

Kamikakushi (Name Not Final)

Himajin (Name Not Final)

Miss Teri

Rank A
Casanuva

Casanono

Bowminos 

Smogmella

Signiton

Master Oden 

Miradox

Mircle

Optimnyan

Trapin

Venurap

Too Much To Take-

Sonaandaa (Name Not Final)

Maginyan

Squandeer

Mr Scoop

Rank S
Statiking-Infinite Tunnel or Free from Crank-a-kai

Tengu-Rarely found in Snowbush (Trees)

Flengu-Rarely found in Greenfield (Trees)

Kyubi-Befriend during the quest "Call of the Kitsune"

Frostail-Can be freed from the Crank a Kai

Chymera-Divine Paradise 5F

Kingmera-Can be freed from the Crank a Kai

McKracken

Squisker

Toadal Demon

Thurston

Agent Specthare

Snow Specthare

Hoteison (Name Not Final)