. . . . . . . . . . . . . "Captain Boomerang/Digger Harkness" . . "Captain Boomerang II" . "Captain Boomerang (Digger Harkness)" . . . "Digger Harkness/Captain Boomerang" . . . . . . "Captain Boomerang" . . . . "Captain Boomerang#Other versions" . . "Captain Boomerang
George Harkness" . . "Owen Mercer" . . "Digger Harkness" . . . . . . . . . . . . . "Captain Boomerang / George \\\"Digger\\\" Harkness" . "George Harkness
" . "George \\\"Digger\\\" Harkness / Captain Boomerang" . "Captain Boomerang I" . . . . "Digger Harkness / Captain Boomerang" . . . . "\\\"Digger\\\" Harkness" . . . . . . . "George Harkness
Captain Boomerang" . . . . . . . "George Harkness / Captain Boomerang" . "George \\\"Digger\\\" Harkness
" . . "his father" . . . . . . . . . . "George \\\"Digger\\\" Harkness" . "Captain Boomerang (Owen Mercer)" . . . "George Harkness
" . . . "Captain Boomerang / George Harkness" . "Owen Mercer
" . . . "Captain Boomerang#Owen Mercer" . "Captain Boomerang" . . . . . . "Boomerang" .