Casey Sander As Mike Rostenkowski
Mike Rostenkowski, Bernadette’s father and a no-frills retired police officer, was played by Casey Sander in the film. Mike adored his kid, but he was a bully to everyone else and was unpleasant to everyone in his immediate vicinity. Howard and Mike didn’t always see things the same way, but they got along OK anyhow.
Joshua Malina As President Siebert
Joshua Malina performed the role of President Siebert in the film. Throughout the series, Siebert served as the dean of CalTech’s engineering school. In their relationship, Sheldon would frequently visit or contact Siebert in the middle of the night seeking information, which became a running joke between the two of them.