The point, initially, of the DC Bombshells comic was that this was a world where all the prominent heroes were women. Obviously, being based on a line of statues 
reimagining DC characters as 1940s pin-up girls, women were going to have a much stronger presence in the setting. But given that the overall popularity meant the statue line expanded well beyond its intended scope (it was originally going to be just 12 releases, but ended up with dozens more) it's almost inevitable that eventually some boys would sneak in. First was Joker, then Superman, followed by Aquaman, and finally Batman. Which meant the comics had an interesting problem to deal with when it came time to introduce him.
Like we once said, Batwoman wasn't a copy of Batman, because her world had no Batman: the first thing she does in the first issue of the comic is save the Waynes from getting shot, so Bruce wasn't raised in trauma and darkness, but on hope, love, and inspiration; so how do you justify him deciding to be Batman? Well, you fast forward to the '60s and make him be inspired by Batwoman, using Catwoman as a mentor so he'll be ready to train the next generation of girls when they come of age and it's their turn to save the world.
But that Batman is not this Batman. The Batman design that was used for the statue 
and the comic was basically similar to the Liberty File suit, which is fine, but not memorable in the same way the other characters are. However, if you recall Huntress and Ravager, you'll know that DC did a bunch of variant covers featuring characters who otherwise never appeared in the setting. Well, the cover for Batman #43 showed us Ant Lucia's original concept for what a Bombshells Batman would be.
Follwing the lead of The Return of Bruce Wayne, this version of Batman was a hard-boiled noir detective. Lucia worked up a really cool design, with a trenchcoat standing in for the cape, and a vest with lots of pockets in place of a utility belt. Luckily for us, it's that design this Lil Bombshell goes with. His coat is blowing in the wind, and he's holding a grappling gun with a bat-shaped hook in it. One thing that would have been nice to include would be painted shadow over his eyes, like Batwoman got - not as real facepaint, just something stylish.
There's a Joker released in Series 3, as well, but he doesn't really work: "Joker, but he's wearing a 1940s style suit" is pretty much just a normal Joker, yeah? And similarly, the "official" Bombshell Batman is barely different from a normal Batman. Getting this alternate design makes for a much better inclusion.
