Hoohoo Civilization

From the Super Mario Wiki

The Hoohoo Civilization was an old tribe that lived in Hoohoo Village and Hoohoo Mountain. They wrote in a type of writing called Hooroglyph. They were mentioned in the game Mario & Luigi: Superstar Saga.

Hoohooros was the ancient weapon of the civilization. The civilization is mentioned to have been "great people" by the Hoohooligans, who happen to be their descendants and members of their species.