These figures are good luck charm from Kagoshima (Kyushu Island) in Japan.
They are known for protecting family from sickness and suffering.
Figures are handmade, so you see an unique facial expression in each one of them.
Red one is known as a fire deity and white one is known as a female deity. Some people place red one in a kitchen area, and white one on a dresser. People also place them by the entrance of their home.
In traditions, it is suggested to add extra one for their family.
The extra one will sacrifice for the rest of the family. 3 family member + 1 extra = 4
Also your family will receive extra luck!