At the time of Incorporation the promoter and director can be different. It is not mandatory that promoter will be first directors. As per clause no. 64 of Article of Association of Table A of Schedule I of the Companies Act, 1956 the no of Directors and the name of First Directors shall be determined in writing by the subscribers of the MOA or majority of them. Section 254 also says subscribers to the memorandum shall be deemed to be a directors. So the name of first directors will be on the AOA of the Company.