Kapp'n (かっぺい, Kappei) is a character from the Animal Crossing series. In his appearance from Animal Crossing: Wild Wold and City Folk, he is referred to in Japanese as うんてんしゅ (Driver).
Kapp'n is a sea-faring kappa, though he is occasionally referred to as a turtle. His first appearance was in Dōbutsu no Mori+ for the Nintendo GameCube, which was later localized as Animal Crossing. He would ferry players to their town's local island as long as a Game Boy Advance was connected via Link Cable. Along the way, he would sing shanties, make wry comments, and flirt with female players. This started a trend of Kapp'n transporting players to new places: in Animal Crossing: Wild World, he shuttles the player into town through taxi, while in Animal Crossing: City Folk, he drives a bus to and from the player's local city. In Animal Crossing: New Leaf, he returns to his original role of ferrying players to the local island. New Leaf also introduced his extended family: his wife, Leilani; his daughter, Leila; and his mother, Grams.
His appearance as an Assist Trophy in Ultimate is based on his appearance in Animal Crossing: City Folk where he would take the player to the City by bus.
A taxi driver in Animal Crossing: Wild World who drives the player into town for the first time. His questions determine the appearance of the player and sometimes come off as a bit rude. In the original Animal Crossing, you could travel to an island by boat. Kapp'n was the guide who ferried the player to that island and is remembered for his unique speech and salty songs.
Kapp'n appears as a background character in the Tortimer Island stage, now using his appearance from Animal Crossing: New Leaf. He drives his motorboat, creating a temporary platform on either side of the stage.
In Smash Tour
In Smash Tour, Kapp'n will see it inside the Bus to the City, it's a blue item. A player can use Bus to the City at the beginning of a turn to warp all other players to their location on the map.
The Bus to the City trophy is exclusive to the Wii U version.
As an Assist Trophy
In Super Smash Bros. Ultimate, Kapp'n debuts as an Assist Trophy. When summoned, he will get in his bus and drive it across the stage, turning around at edges and occasionally jumping the bus up into the air. Any fighter hit by his bus will get trapped inside, after which Kapp'n will drive it towards a blast line, potentially causing an OHKO. Any player caught inside can mash buttons to escape, after which Kapp'n will resume driving erratically across the stage, potentially capturing another player. As with other items that grab the player and carry them away like the Beetle and Boss Galaga, the higher the damage the captive has, the more difficult it will be to escape. If Kapp'n succeeds in driving a player past a blast line, he is then removed from play. Like the Thwomp, his bus is indestructible and therefore he cannot be defeated. Training Mode describes his Assist Trophy: Takes opponents who are hit by the bus off of the screen. Can't be KO'd. He also reprises his appearances in Smashville, Tortimer Island, and Town and City; due to this, his Assist Trophy can never appear on these stages. This makes him the only Assist Trophy from a major universe who can’t appear on any stage from his own series.