The Uchi personality is one of two personalities introduced in Animal Crossing: New Leaf, the other being the Smug personality. So far, there are 21 uchi villagers.
Uchi villagers will act like a mother to the player, being kind and protective. When the player has been stung by bees, they will give the player medicine. Uchi villagers will act grown up and sometimes tomboyish.
 List of uchi villagers