Gilbert Dullindal is the chairman of the PLANT Supreme Council. Durandal seems to have the agenda of ending all conflicts between humans, especially the chasm between the Naturals and the Coordinators, i.e. the Earth and PLANT.
In October CE 73 Dullindal meets with Orb’s representative Cagalli Yula Athha to discuss about the rearmament of ZAFT but this meeting is interrupted when three prototype mobile suits of ZAFT are stolen by three Extended pilots of the Earth Alliance. Durandal later stays on the Minerva while the ships is chasing the Girty Lue of the EA. When the Minerva tries to prevent the pieces of Junius Seven fall on Earth he returns to PLANT and after the colony drop quickly helps the Naturals by bringing medical goods and food on Earth. Nevertheless PLANT is blamed for the colony drop and although Durandal tries to negotiate PLANT is attacked by nuclear missiles and so the Second Bloody Valentine War starts.
To calm the people Dullindal calls for help from Lacus Clyne look-alike Meer Campbell to act as the true Lacus and so calm down the anger of the people of the PLANTS. Also during a meeting with Athrun Zala, who expressed his desire to do something to repair the damage created by his father ideals, he is able to make him come back to ZAFT and also makes him a member of FAITH. He also follows the path of the Minerva while he is on PLANT. He saves Shinn Asuka from being punished after he violated military orders, since his skills are needed in order to fight the disastrous attacks of the GFAS-X1 Destroy (from which he holds plans although it is unknown how he got them). He makes a speech to the entire world where he reveals the existence of Logos and that this organization is behind the whole war. Any footage of Archangel and the Freedom Gundam fighting against the Destroy were omitted from his speech, propoganda to further spread the image that the ZAFT military alone was responsible for the victory.
Although there isn't much information abound Dullindal’s past it is revealed that he once was working as a geneticist. He also was a friend of Rau Le Creuset and it appears that it was him who gave Creuset the pills to stop the pain from his genetic malfunctions. In the past he also had a relationship with later Minerva captain Talia Gladys but it seems that she left him because she wanted a child. Nevertheless it appears that in CE 73 they are still sleeping together (which is once shown when they were sharing quarters on the Minerva). In the new Gundam SEED Destiny Astray manga, he is shown with Kira's father Ulen Hibiki. This suggest that he not only knew of Hibiki's Ultimate Coordinator project, but may have also participated in it. This connection between Dullindal and Hibiki was never clarified in the actual show, but may be expaned upon in future volumes. Years prior to the events of the Bloody Valentine War, as depicted in Gundam SEED X Astray, a mysterious black-haired man wearing sunglasses met the then-escaped young Canard Pars and instigated him against Kira Yamato. In CE 73 this man is revealed to be Dullindal; However, his reasons for doing so are still unknown. Alledgedly Destiny Astray has also recently revealed that Gilbert was at some point a member of LOGOS. Also, at least one staff interview has suggested that during the time of the first SEED series Gilbert was involved in PLANT-funded experiments to deal with the reproduction problems appearing in later generation Coordinators.
Doubt of Dullindal's true motivations by Gundam fans may be based on the fact that his seiyuu is Shuichi Ikeda, who is the the voice of Amuro Ray's archrival Char Aznable. Casting further doubt on his intentions is his attempt to eliminate Athrun Zala shortly after Zala's refusal to pilot the new ZGMF-X666S Legend, who has trouble trying to accept the death of his friend Kira Yamato (although Kira actually survived). It is also speculated that the Armory One Theft, the Junius 7 drop and the failed assassination attempt on the real Lacus Clyne are all his works or authorized by him. Adding to this controversy is the fact that he was full aware of the existence of the GFAS-X1 Destroy giant mobile suit as well as the Moon-based Requiem energy cannon but no direct evidence links Chairman Dullindal to the aforementioned events, although interviews with a Destiny scenarist tend to confirm that assumption. It should be noted that at a point in the series (Destiny, phase 39), the profile of the terrorist behind the 'Break the World' incident (the Junius 7 drop on Earth) is shown right after Dullindal's. Although it is easy to assume that there is a causality link between the two pictures (the terrorist's profile was mysteriously erased, bringing other questions about the matter), the scene nevertheless spouted a series of theories according to which Dullindal actually compelled the EAF to steal the three Millenium-series Gundams and ordered a loyal faction of Coordinators (former Patrick Zala followers) to throw J7 off its normal orbit onto Earth so that he could create a climate of terror and war on Earth, paving the way to ZAFT's return on Earth and its portraying the good side. The ultimate goal of this maneuver, according to those theories, is to enable Durandal to implement the Destiny Plan on the entire human population with minimal opposition, by gaining its trust first - thanks to the climate of insecurity caused by the return of hostilities and the damaged caused by the J7 asteroids. However, all of this is still unconfirmed and is the result of mass/wild speculation.
A research notebook recovered by DaCosta on the abandoned Mendel space colony revealed that Dullindal has something in his mind called the Destiny Plan, and it is related to his passionate speech to the entire world about defeating the warmongering LOGOS, and creating a new world where war no longer exists. The Archangel's crew think his plan would be to implement a new world order where every human is given the role for which they are best genetically suited at birth, and this would fulfill Dullindal's ideal of perfect genetic determinism, as this should be the ultimate goal of all Coordinators. Under this theory humans will no longer fight against others for things that they wish, since each person's destiny are predetermined at birth. In this New World, genes would be the King, and Durandal would be the High Priest (in terms of chess).
Gilbert would die at the last day of Second Bloody Valentine War, shot by Rey Za Burrel, formerly his most faithful follower. His lover, Minerva's captain Talia Gladys, stayed behind in the crumbling fortress to accompany him right till the end. The three of them are later crushed to death by falling debris.
Personal Data
Date of birth: November 19, CE 41
Age: 32
Height: 183 cm
Weight: 69 kg
Genetic type: Coordinator
Blood type: AB
Love Interest: formerly Talia Gladys