Religion: indeterminate
Name: Gunny
Other Names: unnamed gunnery sergeant
Classification:
supporting character
Publisher(s): 
First Appearance: Joker: Last Laugh #3 (Dec. 2001): "Lunatic Fringe"
Creators: Chuck Dixon, Scott Beatty, Walter McDaniel
Number of Appearances: 2
Teams/Affiliations: United States Marine Corps
Enemy of: The Joker
Gender: male
Note: worked with Kirk Langstrom (Man-Bat)
An unnamed Marine referred to by Power Girl as "Gunny" worked with Dr. Kirk Langstrom at S.T.A.R. Labs to develop an antidote to a chemical concoction the Joker used to "Jokerize" numerous super-villains and place them under his homicidal control. "Gunny" is not actually this soldier's name. "Gunny" is a common slang term for the United States Marine Corps rank of Gunnery Sergeant (E7).
This unnamed is apparently in charge of the miltary-sanctioned effort to develop this antidote.
When Power Girl brought Harley Quinn to the S.T.A.R. Labs facilty where Dr. Langstrom was striving for an antidote, she told the officer, "Care to take this delivery of my hands, Gunny?"
The stern-looking black soldier stuck his finger at Harley Quinn's chest just below her throat and told her in a threatening manner, "You got two choices, clown girl -- You either help Doc Langstrom over there -- or you make trouble and get a nice big hole in the back of that jester's cap."
The frightened Harley Quinn told Gunny in a quiet voice, "I'll take door n-number one, M-Monty."
This scene takes place in panels 4 through 6 on page 24 in Joker: Last Laugh #3 (Dec. 2001). This is on page 88 in the Joker: Last Laugh trade paperback.
"Gunny" is referred to again in Joker: Last Laugh #5, in another scene that takes place in the S.T.A.R. Labs research site in which Dr. Kirk Langstrom is striving to develop an antidote the "Joker venom." In panel 4 on page 3 (page 129 in the trade paperback), Dr. Langstrom tells a soldier, "This is an El Nino year, Gunny. Joker's "crazy rain" will give us all permanent road rage in another day or so if the people in capes don't shut it down. We're the backup in case they can't."
The soldier Langstrom is talking to is a white man, who cracks a slightly menacing smile as he responds, "Then howzabout I go see if Harley's willing to help us out again?"
It appears that "Gunny" in both of these scenes is intended to the same on-site commanding officer who delights in meancing Harley Quinn. The fact that the character is Caucasian in one issue and African-American a few issues earlier can be attributed to the fact that different artistic teams provided the illustrations for these stories, all working concurrently from scripts.
This is really simply a minor editorial mistake. But one could say that "Gunny" is one of the few DC Comics characters known to have been racially changed from black to white. Or one could simply claim that the "Gunny" Power Girl spoke to was a different "Gunny" than the one Dr. Kirk Langstrom spoke to - even though both conversations took place in the same lab facility only days apart.
Joker: Last Laugh
Suggested links for further research about this character:
- http://everything2.com/title/Gunny
- https://www.comics.org/issue/291660/
- http://comicbookdb.com/issue.php?ID=12496