Alegria was Daisy and Mike's artificial son, assigned to them by the health teacher in The Burden of Parenthood. Paulo became his "stepfather" after Daisy put him into Paulo's arms, prompting Lucy and Daisy to switch partners.
Alegria is an all-white doll with wide, white eyes. He has arms and legs, but lacks hands and feet.
Unlike the doll assigned to Paulo and Lucy, Alegria is shown to be constantly crying. Paulo claimed that Alegria "looked at me like it understood me...".