|Dub Name||Stewart Vanguard|
|Game Debut||Danball Senki (PSP)|
|Anime Debut||Episode 03|
|Appears in||Game, Anime|
|Voice Actor||Yūichi Nakamura|
|Occupation||Japan's Prime Minister|
|LBX:|| Hakai-O (Call Battle)|
Musha (Ranking Battle No.66)
Sousuke Zaizen (財前 宗助) is the Prime Minister of Japan, and a Level 5 crossover support character from the Inazuma Eleven series.
He has a dark iris hair with long bangs that are styled in a point to the side. As the Prime Minister, he is only seen wearing formal clothes which consist of brown suit with a red necktie.
Prime Minister Sousuke was first seen seen debating over the topic of new technology. Kaido Yoshimitsu hired Jackal to assassinate him with the LBX Assassin, but Ban and friends was able to prevent the murder during his inauguration parade.
Danball Senki Wars
- Sousuke's first appearance occurs in the Inazuma Eleven series, another Level-5 series franchise. His standard position as prime minister is the same, while also showing his family; his only daughter, Touko Zaizen.
- His role in Danball Senki to promote LBXs as the same in the Inazuma Eleven franchise where he promotes soccer, all the while defending the younger generations for the country.