Happy is a little girl who was brought to Fairyland by the Council of Elders. Their intention was to have Happy find the key before Gertrude could and thereby make Gertrude a permanent resident that they could harm . When Happy first met Gertrude, she was cheery and happy at first. When Gertrude tried to kill her, Happy blasted her with a rainbow shot that sent Gertrude flying.
Happy found the key and was about to leave Fairyland, to the delight of all the inhabitants. As Happy was about to put the key in the door, Gertrude arrived at the last second and used her powers to kill Happy.