Lester B. Bum is Linkara's Bum counterpart. He first appeared in Linkara's 2009 April Fools video to review the graphic novel Watchmen. He also did a review of Harry Potter and the Deathly Hallows – Part 1 with Doug Walker's Chester A. Bum (who Lester is based on). So far he has yet to again appear.
Lester wears a coat similiar to Doctor Linksano's labcoat. He also has blonde hair covered with a black wool cap.