Who is Mr. Gupta from Song of Kali and what is their importance?

Mr. Gupta is the Director of the Bengali Writers' Union. Gupta is a tall, middle-aged man with a thin face, massive overbite, and a no-nonsense manner. He has a voice like an oboe and the look of a rodent, particularly when he smiles. He tries unsuccessfully to keep Amrita Luczak from accompanying her husband Bobby to handing over of M. Das' manuscript.