NEW YORK: The trappings of success continue to arrive for K-pop sensation BTS, the latest a contract with the toy company Mattel which secured rights to produce dolls of the boy band. And Mattel is not beyond riding those K-pop coattails. Shares of Mattel Inc. spiked almost 9 percent Monday, a day after the toymaker announced a global licensing agreement that also includes collectible figures and games. The South Korean boy band, made up of members RM, Jin, SUGA, j-hope, Jimin, V and Jung Kook, last year became the first Korean pop group to reach No. 1 on the Billboard top 200. BTS is an acronym of Bangtan Sonyeondan or “Beyond the Scene.” The band debuted in June 2013.