Which singer played Andy Bernard's younger brother Walter on "The Office"?

Singer Josh Groban played Andy Bernard’s younger brother, Walter Bernard Jr., on "The Office." Walter is introduced as Andy’s talented and successful sibling, whose achievements intensify Andy’s long-running feelings of being overlooked by his family.

Groban first appeared as Walter in the Season 8 episode "Garden Party," in which Andy hosts an elaborate event at Schrute Farms. He returned in the Season 9 episode "The Boat." The character is portrayed as charming and accomplished, creating a comic contrast with Andy’s insecurity and his parents’ obvious favoritism.

Groban was already an internationally known singer and songwriter when he joined the sitcom. Writer and producer Mindy Kaling reportedly contacted him through Twitter about appearing on the show, and the timing worked around his concert schedule. Viewers sometimes remember Walter simply as “Josh Groban,” but Walter Bernard Jr. is the character’s name; Groban played the fictional brother rather than a version of Andy’s real-life relative.