Monokuro Boo (2005-2008)
Monokuro Boo are two pigs, One black and one white, often with a bee flying around them. There name is derived from "Monotone" and "Boo", which is the Japanese word for "Oink". The San-X company has many colorful characters, but wanted to try a character who is basically, Black, White, and Gray in color.
Not much is known about Monokuro Boo's hobbies and interests, but they do appear to enjoy each other and the buzzing bee never seems to bother them. Their tagline is "Simple is Best".