Bill Walter is Rodrick's friend and Löded Diper's lead guitarist. Bill still lives with his parents and lacks a job, even though he's thirty-five years old. Frank "is worried that Rodrick will see Bill as some kind of a role model and follow in his footsteps one day". When he attended Rodrick's school, he was voted 'most likely to be a rock star' along with a meek-looking, seemingly nerdy little girl named Anna Wrentham (whom Greg believes is in jail). In Diary of a Wimpy Kid: Dog Days, it is revealed that Rodrick met Bill while camping outside waiting for a store to open.