Three Stars of Mechatopia

Three Stars of Mechatopia (メカトピアの三星) are the function of robots that made appearance in Doraemon and Nobita in New Tropps Angels Wings. They are star-like computer chips with three colors but the fourth one was introduced in the story.

Story
The three stars were used as a chip that function as robot heart. However, the yellow one that represent competitive instinct eventually cause the robot's evolution to be the same as human and they eventually seek human to be their slave. The green star first make appearance when Riruru repair Pippo's system by using her own Yellow Star, thus it turned green which represent her kindness toward Pippo.

Near the end of the story, Riruru uses both of her Red Star and Blue Star along with the pendant that Shizuka gave her as a substitute for Green Star to process the program of kindness that overwrite the competitive instinct and change Mechatopia of the present.

Information

 * Red Star - represent "Love".
 * Blue Star - represent "Wish".
 * Yellow Star - represent "Competitive Instinct".
 * Green Star - represent "Compassion and Kindness"