Doned Radiuju is Marche's brother in Final Fantasy Tactics Advance. He is introduced as wheelchair-using kid suffering from an illness, but finds a new life for himself inside a fantasy world that his hometown, St. Ivalice, transforms into. Doned's clan, "Clan Doned", and a faction of this clan, the Doned Faction, can be fought at Ambervale. Though he has his a clan, Doned cannot be fought.
Doned uses a wheelchair in the real world, but can walk in the imaginary world of Ivalice. He has no desire to return to the real world until Marche confronts him and explains how he truly feels. Doned tries to impede Marche's project of reverting the world by stealing his Materite for use in Bervenia Palace's Present Day, but Marche creates an acceptable present with the help of Nono anyway.
After Doned attempts to sabotage Marche on numerous other occasions, Marche sets him up for a meeting at Tubola Cave. Marche expresses his feelings about Doned's preferential treatment from their mother and explains that her care was something that Doned had and Marche did not. Doned finally understands his brother's ambitions and agrees to help him.
Back in the real St. Ivalice, Doned is again using a wheelchair. However, he seems to have accepted his condition, and makes new friends, teaching them how to play Final Fantasy.
Doned appears in Final Fantasy Trading Card Game as a Wind-elemental Forward card.