Firebug has made limited appearances in media outside comics, with Tom Kenny voicing the Joe Rigger incarnation of the character in Batman: Caped Crusader.
The Joe Rigger incarnation of Firebug debuted in Batman #318 and was created by Len Wein and Irv Novick.
[1] The Harlan Combs incarnation of Firebug debuted in Gotham Central #3 and was created by Ed Brubaker and Michael Lark.
Joe Rigger is a soldier and demolitions expert who returns to Gotham City when several family members are killed in building-related accidents.
Using his military training and a costume containing tanks of napalm, he becomes Firebug and attempts to destroy the buildings to prevent further accidents.