At the risk of seeming flippant, it looks like not a font but hand-drawn type. Especially if you found it in a comic.

Here you could find more than few useful ones:
http://www.blambot.com/
http://www.comicbookfonts.com/
http://www.dafont.com/theme.php?cat=102&text=BANG&af=on
http://www.dafont.com/theme.php?cat=101&af=on&text=BANG