Kaname Tousen was formerly the Captain of the 9th Division of the Gotei 13.
As Captain of the 9th Division, which is charged with the editing of Seireitei Communication, Tousen was the chief editor of the journal. He himself wrote a serialization titled "The Path of Justice", which was not very popular, until he began to publish cooking recipes in his articles, which made them more popular among female Shinigami. This also indicates that his speciality is indeed cooking, his favorite dishes being chicken stewed with carrots and other sophisticated ones. He does not like pickled food.
Tousen also has several unique relationships with the Arrancars. Tousen thinks of Grimmjow Jaegerjaquez in the same manner as Kenpachi Zaraki; a killing machine that will cause only more bloodshed in the world. Wonderweiss Margera seems to have a great affection towards him. Tousen explains that this is because they are both pure spirits, and that pure spirits tend to attract and follow each other.