More Discussions for this daf
1. Ma'achal ben Derusa'i 2. The Kirah and the Blech 3. Rashi 36b Beginning of Perek Kirah
4. Heter for Opening the Oven on Sabbath

Yossi Feldmann asked:

Do you have detail about the CHARACTER of Ben Derusai.

Yossi Feldmann, London, England

The Kollel replies:

Rashi (Shabbos 20a, Avodah Zarah 38a) simply tells us that he was a robber, and used to eat his food only partially cooked (presumably because he was always on the run).

A Rebbi Drusa'i is mentioned in the Midrash (Shemos Raba 35 and 43), describing the lifestyles of the rich and famous. In Yerushalmi Sanhedrin 7:13 he demonstrates expertise in witchcraft. But I doubt that he was related to the ben Derusa'i of Maseches Shabbos.