Step 1: Understanding the Concept:
The question asks to identify the founder of the influential Bengali theatre group, 'Bohurupee'.
Step 2: Detailed Explanation:
'Bohurupee' is one of the most important theatre groups in the history of post-independence Bengali theatre. It was founded in Kolkata in 1948 by Sombhu Mitra along with other artists like Tripti Mitra. The group staged landmark productions of plays by Tagore, Ibsen, and Sophocles, and was a central part of the Group Theatre Movement in Bengal.
Step 3: Final Answer:
The founder of 'Bohurupee' was Sombhu Mitra.