The Mayor, with the consent and approval of the majority of the members of the Board of Aldermen, shall have power to appoint a Treasurer, City Attorney, City Assessor, Street Commissioner, Night Watchman, City Prosecutor, Fire Chief, Municipal Judge, Chief of Police and such other department heads, members of commissions, committees and boards as are presently established or may be established by ordinance in the future. If deemed for the best interests of the City, the Mayor and Board of Aldermen may, by ordinance, employ special counsel to represent the City, either in a case of a vacancy in the office of City Attorney or to assist the City Attorney, and pay reasonable compensation therefor.