|Nation or Planet of Origin|
|Base of Operations|
|Apparently normal human being with excellent hand-to-hand combat skills and marksmanship.|
|Green Arrow Vol. 2|
|Green Arrow Vol. 2 #11 (Feb. 2002)|
|Kevin Smith & Phil Hester|
Nothing is known of the origin or motivations of the serial killer moving across the country murdering third-rate costumed heroes and assorted vigilantes.
Expressing himself only with onomatopoeic words, the last thing his victims hear is the utterance of a singular imitation of whatever sound his weapon makes before its implementation by the deadly Onomatopoeia.