Lacus Clyn plays an inportent in both Gundam Seed and Gundam Seed Destiny she helps bring peace and freedam both the Plants home to the Coordinators in space and Earth. In the first season Lacus is first seen as a person how would not seen to fight in a war but she does. She helps out Kira Yamaato Steal theZ GMF-X10A Freedom Gundam from Z.A.F.T and also steals the battle ship Eternal as well. Then she would join up with the Kusanagi and the Archangel to make the Three Ships Alliance. The alliance of all three ships would be the bown foll of Z.A.F.T.
In season two Lacus is seen with Kira living in Orb happily but not for long. A group of Coordinators try to kill her but do not get so lucky. Kira comes to her rescu and begins anther and long fight for peace. So Lacus heads back to space to find out more things out about Gilbert Durandal the chairmen of the plants plan for every living person on the Earth and the Plants and discovers the Destiny Plan. The Destiny Plan would make people do jobs that best sout them with out them try to make there own path. But Lacus and Kira think every person shoud make there own path and that no one has the right to take it from someone. Lacus joins the fight for peace and freedam with the Three Ships Alliance and take bown Gilbert Durandal and his Destiny Plan.