Purple Mouse

From the Super Mario Wiki

Purple Mice are ghosts found in Luigi's Mansion. As their name suggests, they are purple mice, and like their blue cousins, they serve as obstacles for Luigi. However, unlike their blue counterparts, Purple Mice can also run up the walls and across the ceiling. If they hit Luigi, they remove five points of health just like Blue Mice.

Luigi's Mansion
Protagonists	Luigi • Mario • Professor Elvin Gadd
Items & Objects	Coin • Bill • Gold Bar • Blue Jewel • Green Jewel • Red Jewel • Blue Diamond • Gold Diamond • Red Diamond • Pearl • King Boo's Crown
Ghosts	Normal	50 Boos • Bat • Blue Blaze • Blue Mouse • Blue Twirler • Bowling Ghost • Ceiling Surprise • Flash • Flying Fish • Garbage Can Ghost • Grabbing Ghost • Gold Ghost • Gold Mouse • Purple Bomber • Purple Mouse • Purple Puncher • Shy Guy • Skeleton Ghost • Spark • Speedy Spirit • Temper Terror • Waiter • Black Bogmire • Fire Elemental Ghost • Ice Elemental Ghost • Trapdoor • Water Elemental Ghost
	Portrait	Biff Atlas • Bogmire • Boolossus • Chauncey • Clockwork Soldiers • Henry and Orville • Jarvis • King Boo • Lydia • Madame Clairvoya • Melody Pianissima • Miss Petunia • Mr. Luggs • Nana • Neville • Shivers • Sir Weston • Slim Bankshot • Spooky • Sue Pea • The Floating Whirlindas • Uncle Grimmly • Vincent Van Gore
Rooms	Area One	Anteroom • Balcony • Foyer • Master Bedroom • Nursery • Parlor • Study • Wardrobe Room
	Area Two	Bathroom • Ball Room • Storage Room • Washroom • Mirror Room • Laundry Room • Butler's Room • Hidden Room • Conservatory • Dining Room • Kitchen • Boneyard • Graveyard
	Area Three	Astral Hall • Balcony • Bathroom • Billiards Room • Bottom of the Well • Courtyard • Fortune-Teller's Room • Nana's Room • Observatory • Projection Room • Rec Room • Safari Room • Tea Room • The Twins' Room • Washroom
	Area Four	Altar • Armory • Artist's Studio • Breaker Room • Cellar • Ceramics Studio • Clockwork Room • Cold Storage • Guest Room • Pipe Room • Roof • Sealed Room • Sitting Room • Telephone Room