Whacka

From the Super Mario Wiki

Whacka

First Appearance	Paper Mario (2001)
Affiliation(s)	None
Latest Appearance	Super Paper Mario (2007)

Whackas are sentient blue mole-like creatures that live on the west side of Mt. Rugged, near the shore of Keelhaul Key, and near Downtown of Crag. Hitting one on the head with a Hammer will make a Whacka's Bump, an edible and valuable item, appear.

A Whacka.

However, this causes internal injuries to the Whacka. If they are hit too many times, they will die, releasing a few coins. Since their bumps are so valuable, Whackas are an endangered species and should be treated with care. According to Wonky, there is only one Whacka left in the world; Russ T. said the same, attributing the disappearances of the Whackas to hunting. However, this may be false as, in Mario Party 6; on the Snowflake Lake board, Whacka-like creatures can be seen popping up out of the snow.

When Whacka disappears in Super Paper Mario, a Cragon named Nortie appears where Whacka popped out. She claims that the the Whacka was her freind.

At one point, the Whacka on Mt. Rugged sends Parakarry a letter stating he one day dreams of flying. The Whacka that appears in Super Paper Mario's Catch Card can be obtained by collecting three hundred shop points.

[edit] Catch Card

Whacka's Catch Card.

Card Type: Rare

Card Description: This odd guy sprouts pastries when whacked on the head. Sadly, his kind is on the verge of extinction. Please headwhack in moderation.

[edit] Trivia

Whacka's name is derived from the popular arcade game "Whack-a-Mole" where the player has to hit a mole that comes out from a hole. His coloration could be a reference to the evil, blue moles fought in the "Mole Patrol" minigame from the Super Nintendo Entertainment System game Super Scope 6.
Whacka's appearance is very similar to Diglett, a Mole-type Pokémon. Like Diglett, Whacka's body under the soil is completely unknown and never seen.
In addition to a Whacka actually appearing in Super Paper Mario, a Sammer Guy by the name of Wrath of Whacka appears, hoping to avenge the smitten Whackas of the dimensions.
Although Whacka has been spotted in non-Paper Mario titles, he has never spoken outside of one.