Michel Gbagbo, who has dual French and Ivorian nationality, was charged along with other close allies of his father.
The BBC's John James in Abidjan says all the key figures arrested with Mr. Gbagbo have now been charged, except for the former president and his wife, Simone.They are being held in separate towns in the north and could be investigated by the International Criminal Court. The 12 are charged with taking part in an armed insurrection and attempting to undermine the state
in the world's largest cocoa producer.
Human rights groups strongly condemned their four-month detention, calling for them to be charged or released. President Ouattara insists that those on both sides of the political divide would face justice if they committed crimes during the five-month dispute. So far, none of his supporters have been arrested or charged, even though human rights groups have accused
some of them of killing people suspected of backing Mr. Gbagbo.
Mr. Gbagbo refused to accept defeat in presidential elections in November. He was ousted from power after forces loyal to Mr Ouattara – the internationally recognized winner of the polls – entered Abidjan and captured him with the backing of UN and French troops.