TWI, the media arm of IMG, has a global network of more than 40 offices and an internationally-recognised sales force.
Endeavor is one of the largest talent agencies in Hollywood, representing a host of well-known actors, as well as creators and executive producers of popular TV shows.
Transend aims to exploit all rights opportunities in various formats, including video, DVD and new media.
Former head of programming at Target Entertainment, Ian Moffitt, has been appointed as managing director of Transend, and will be based in Los Angeles.
Initial projects include 'Vegas Law', a reality series about a flamboyant defence attorney, and 'Shaquille', a behind-the-scenes show featuring the basketball/rap star Shaquille O'Neal.
Bill Sinrich, CEO of TWI, said: "This is the perfect marriage of Endeavor's extraordinary reach in the Hollywood entertainment environment and TWI's world-class sales and distribution teams.
He added that he was "thrilled that this takes TWI one step further in our new direction, entertainment, as part of our growth strategy for the future".
