Professor Bertram Kibbler (Brian Posehn) is a geologist at Caltech, who meets Amy while she was working there in her own lab in "The Occupation Recalibration". The character made various other appearances, including forming a band with Raj and Howard in which he sings a song from the point of view of the boulder seen near the beginning of the movie Raiders of the Lost Ark. After Raj stops accepting his father's money to become financially independent, he moves into the room above Bert's garage.