Fusion

is a process that combines two Yo-kai, two items, or an item and a Yo-kai, to create a piece of equipment/stronger and evolved Yo-kai for the player to use.

In Yo-kai Watch
Fusions are unlocked in Chapter 3, where the location of Blossom Heights is also available to be explored. The player can go over to Shoten Temple and fuse some Yo-kai or items together.

In Yo-kai Watch 2
Fusions work like they do in the last game, only for it to be accessible much earlier on. They can be unlocked after completing the Key Request Bam-Boom! Fusing!.

However, Fusions for select Yo-kai are now different while some of them are now only obtained by levelling them up.

In Yo-kai Watch 3
Fusions can be unlocked by completing the Cruisin' For Some Fusion Quest. In BBQ, Fusions can be performed at the church in East Pine.

Yo-kai Watch 2
{| class="main roundy mw-collapsible mw-collapsed" style="border: 1px solid #e84191; width: 95%; text-align:center;" ! style="width: 20%;" | Yo-kai ! style="width: 20%;" | Item ! style="width: 20%;" | Resulting Yo-kai
 * style="background: #FFF;" |Hissfit2.png
 * style="background: #FFF;" |Sword of Bloody Violence.png
 * style="background: #FFF;" |Kushamusha2.png
 * style="background: #FFF;" |Slumberhog.jpg
 * style="background: #FFF;" |Goldfish Lantern.png
 * style="background: #FFF;" |Snortlehog Art.png
 * style="background: #FFF;" |Samureel.jpg
 * style="background: #FFF;" |Gold Emblem.png
 * style="background: #FFF;" |TimeKeeler.png
 * style="background: #FFF;" |Akaname.png
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |Moderzunge Artwork.png
 * style="background: #FFF;" |Dorotabo.png
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |Grapschmampf Artwork.png
 * style="background: #FFF;" |Enraenra.png
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |Enraenra Kai.jpg
 * style="background: #FFF;" |Sumodon.jpg
 * style="background: #FFF;" |Vintage Parasol.png
 * style="background: #FFF;" |Yokozuna-udon PYW-121.png
 * style="background: #FFF;" |Whateverest art.jpg
 * style="background: #FFF;" |Terracotta Figure.png
 * style="background: #FFF;" |Whatuption official art.png
 * style="background: #FFF;" |Panja Pupil.jpg
 * style="background: #FFF;" |Master's Lantern.png
 * style="background: #FFF;" |O-Edo Ninja Panda PYW-122.png
 * style="background: #FFF;" |Faux Kappa Official Artwork.png
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |Kappa Kai.jpg
 * style="background: #FFF;" |Sandmeh Official Art.png
 * style="background: #FFF;" |Sand Suit.png
 * style="background: #FFF;" |Oyamasunao-0.png
 * style="background: #FFF;" |Pallysol Art.png
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |YW9-023.png
 * style="background: #FFF;" |Hungramps Artwork.png
 * style="background: #FFF;" |Love-Packed Rice Ball.png
 * style="background: #FFF;" |]Hungorge Art.png
 * style="background: #FFF;" |Happycane.jpg
 * style="background: #FFF;" |Bright Red Hibiscus.png
 * style="background: #FFF;" |Tokimekibi PYW-123.png
 * style="background: #FFF;" |Predictabull Official Art.png
 * style="background: #FFF;" |Spiritual Water.png
 * style="background: #FFF;" |Smashibull Art.png
 * style="background: #FFF;" |Pallysol Art.png
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |YW9-023.png
 * style="background: #FFF;" |Hungramps Artwork.png
 * style="background: #FFF;" |Love-Packed Rice Ball.png
 * style="background: #FFF;" |]Hungorge Art.png
 * style="background: #FFF;" |Happycane.jpg
 * style="background: #FFF;" |Bright Red Hibiscus.png
 * style="background: #FFF;" |Tokimekibi PYW-123.png
 * style="background: #FFF;" |Predictabull Official Art.png
 * style="background: #FFF;" |Spiritual Water.png
 * style="background: #FFF;" |Smashibull Art.png
 * style="background: #FFF;" |Predictabull Official Art.png
 * style="background: #FFF;" |Spiritual Water.png
 * style="background: #FFF;" |Smashibull Art.png


 * style="background: #FFF;" |Gnomey Offical Art.png
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |YW9-025.png
 * style="background: #FFF;" |Predictabull Official Art.png
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |YW9-024.png
 * style="background: #FFF;" |Grumpus Khan Artwork.png
 * style="background: #FFF;" |Carved Bear.png
 * style="background: #FFF;" |PYW-124.png
 * style="background: #FFF;" |Squeeky official art.png
 * style="background: #FFF;" |Roar Horn.png
 * style="background: #FFF;" |Rawry Render.png
 * style="background: #FFF;" |Danke Sand.jpg
 * style="background: #FFF;" |Dune Sand2.png
 * style="background: #FFF;" |Nosankyu-nyudo PYW-125.png
 * style="background: #FFF;" |Hanako-san artwork.png
 * style="background: #FFF;" |Cursed Journal.png
 * style="background: #FFF;" |Foiletta Art.jpg
 * style="background: #FFF;" |Takoyakid Art.jpg
 * style="background: #FFF;" |Takoyaki Tray.png
 * style="background: #FFF;" |Takoyakishin PYW-126.png
 * style="background: #FFF;" |Flushback Artwork.jpg
 * style="background: #FFF;" |Memory-Blotting Device.png
 * style="background: #FFF;" |Vacuumory2.png
 * style="background: #FFF;" |Mermaidynartwork.png
 * style="background: #FFF;" |Mermaid Jewel.png
 * style="background: #FFF;" |Mermadonnaartwork.png
 * style="background: #FFF;" |Mermaidynartwork.png
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |\YW9-026.png
 * style="background: #FFF;" |Lady Longnek.jpg
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |Rokurokubikai.png
 * }
 * style="background: #FFF;" |Mermaid Jewel.png
 * style="background: #FFF;" |Mermadonnaartwork.png
 * style="background: #FFF;" |Mermaidynartwork.png
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |\YW9-026.png
 * style="background: #FFF;" |Lady Longnek.jpg
 * style="background: #FFF;" |Kaima Element.png
 * style="background: #FFF;" |Rokurokubikai.png
 * }
 * style="background: #FFF;" |Rokurokubikai.png
 * }

Also see

 * Evolution
 * Equipment
 * Lightside and Shadowside
 * Godside
 * One-chanceside