"The Story of War-Yore"
Shang-Chi and Leiko have left the British Secret Service, but that doesn't stop a mysterious group from targeting them. They employ Eric Slaughter, a schizophrenic mercenary who takes on various historic personas while on mission. Code named War-Yore, he attacks while in the identities of Robin Hood, then Attila the Hun, ultimately capturing Leiko, despite BlackJack Tarr and Reston's attempts to warn Shang-Chi.
First appearance and origin of Eric Slaughter, aka War-Yore.