Shadow 21 is a cybernetic assasin built from the body of a young Coruscanti athlete who had been taken for the purposes of creating 21. Known for his silent and somewhat eery demeanor, 21 has little in the ways of friends. He was first built in 21 ABY, soon after Darth Caedus won the war so as to eliminate all enemies, such as Chi Niathal, and also serve as a bodyguard. Through the decade until 49 ABY, he'd remain at Caedus' side until his death, wherein he joined Allana Solo, a small love interest of his along with being the late Darth's daughter.