K.S.A. 12-104: "Governing body" defined.

In commission and commission-manager cities, the mayor shall be considered part of the city governing body in all matters. In mayor-council, modified mayor-council and mayor-council-manager cities, the mayor shall be considered part of the city governing body for the purpose of voting on the passage of a charter ordinance. Whether the mayor is considered part of the governing body for purposes of voting on any other matter shall otherwise be established by ordinance of the city passed by a 2 /3 majority of the council. All existing ordinances and charter ordinances relating to the mayor being considered part of the city governing body shall remain in effect until amended or repealed by such city.