Gemara Shabbos 20a and in other locations mentions כמאכל בן דרוסאי Rashi explains that Ben Drosai was a thief who ate his food when it was only cooked 1/3. Did Ben Drosai have some sort of Zechus that his name is often mentioned when it comes to Halchaos of Bishul on Shabbos?
The Yerushalmi in question is in Avodah Zarah 4:4 Prof. Shamma Friedman has written about the historical Ben D'rsai (who based on the Yerushalmi was not a Jew).
According to this article, Rashi assumes that he was a thief, based on logic and not tradition. Based on the Yerushami, he was a person who aided Rav Yochanan to remove idolatry.