By 1975, LEGO had grown to over 2,500 employees and continued to develop new innovative sets that included a series for girls involving doll houses and furniture, ships made out of LEGO that could float in water and a Lego Technic which created models with mechanical moving parts. In 1978, LEGO continued to transform the building toy industry by introducing the first miniature figures with painted faces and movable arms and legs. LEGO incorporated the mini-figures into the launch of three new play themes: LEGO Castle featuring medieval knights and castle sets, LEGO Town featuring city characters and modern buildings and LEGo Space featuring astronauts and spacecraft he company changed leadership in 1979, when third-generation Kjeld Kirk Kristiansen, Godtired S on, became president again and chief executive officer(CEO) of LEGO