Speedy Spirit

"'A pale-blue ghost who is quick to flee at the first signs of danger.' - The Ghost Portrait"Speedy Spirits are one of many Ghosts, but the main difference is they are hidden within the Mansion, and can be found in dark rooms. Unlike every other ghost, once these pale-blue fiends disappear, they can never be seen again in that room. These ghosts are the hardest to catch of all, with the shortest stun time, and the fastest speed, though they only have 10 HP. However, upon catch they will release loads of coins, bills, and occasionally stones. The best strategy to find them is to search every room.

...or you could just take a peek at our S-Rank Treasure Guide.

Trivia

 * The Gold Ghost and Temper Terror share models and animations with this specter.
 * There are only 15 Speedy Spirits in the regular Mansion. The Hidden Mansion is completely shifted, however.