Bob is responsible for each department reaching their evil research quotas each quarter. He considers himself to be a delegator and supervisor, rather than a doer. He has motivational posters hung on his wall and used one of the lab's death lasers to etch "Best Boss" into his mug. If your quota is not met, he will use unconventional motivational methods.
Each mastery level adds another card to the cardpool for defeating Bob. Each of the bronze, silver, and gold mastery levels unlocks a new card, while it takes all three diamond and onyx levels to unlock a single card.