Mister Takara is the head and founder of Takara Industries inc™ that designs and builds the most beloved mechanical toys. One night while closing up the factory, he heard some strange noise comming from the storage. Afraid it'd be some burglars equipped with various weapons, he carefully peeked inside, only to find that the turtles were crawling out of their boxes. Much to his surprise, there was no one else around. After doing some research, he discovered that they had not just built cute little toys as they intended, but instead had managed to create androids, fully able of their own thought and action. Fascinated, he soonly realised that these could not be sent off to stores worldwide, only to be given to spoiled irresponsible children. They were thinking beings, with the right of a good home. And so, Mister Takara dedicated his work into finding the perfect home for each and everyone of them, one turtle at a time.
The turtles may have been built as machines, but they're fully functioning as any biological being. They walk, eat, sleep and even talk, but rarely while people can see or hear them.