Ghosts (Luigi's Mansion)
Various types of ghosts appear in Luigi's Mansion as enemies encountered by Luigi in his quest to rescue Mario from King Boo, which can be defeated using the Poltergust 3000. The three types of ghosts depicted in Smash Bros., the Blue Twirler, Purple Puncher, and Gold Ghost, are common species found throughout the mansion. Boos also appear in the mansion, but are treated as a separate class of ghostly enemy.
Different but stylistically similar ghost enemies appear in Luigi's Mansion: Dark Moon.
Ghosts from Luigi's Mansion appear in Super Smash Bros. for Wii U in two roles.
As a trophy
The trophy depicts the same three ghosts as in Brawl, all in the exact same pose.
In Smash Tour
In Smash Tour, Ghosts (Luigi's Mansion) is a blue item. A player who uses it will be able to walk through stationary opponents on the map without triggering battles for one turn.