Thumper was a fictional acrobatic guard tasked by Ernst Blofeld with imprisoning the reclusive billionaire Willard Whyte. Portrayed by American actress Trina Parks, the character was created especially for EON Productions' 1971 James Bond film Diamonds Are Forever.
Along with her counterpart Bambi, Thumper was an operative of the criminal organisation SPECTRE. The pair were tasked with guarding the imprisoned billionaire Willard Whyte at his luxury residence in the suburbs of Las Vegas. Highly athletic and trained in hand-to-hand combat, the pair made formidable prison guards, and attempted to murder the inquisitive James Bond during his visit to the property. After a protracted brawl, the women threw him into an outdoor pool. Sensing an opportunity to finish Bond off, they dived in and attempt to drown him; only to have the tables turned on them. 007 held them both underwater until CIA liaison Felix Leiter and his men arrived, presumably taking the pair into custody. Their fate remains unknown.