Barbara Gordon (Patreon)

While Batman's demise was tragic, it did open up a few possibilities. With the Batcomputer now free to use for whatever tasks desired, Barbara set it to work creating a new strain of Venom. She wanted the strength without the side effects, and she wanted it to be a one time use, permanent, drug. It took some time, time which Batman would never have allowed the Batcomputer to spend instead of solving crimes, but eventually miss Gordon had her Venom. This new Venom didn't grant an instant massive increase to muscle size and strength like Bane's version, but it also wasn't addictive and didn't turn the blood green. Instead, this new Venom permanently altered Barbara to be able to rapidly build muscle, and for her body to have no upper limit to her size. In addition, and indeed to facilitate this unending size, the new Venom would grow her skeletal structure along with her muscles. Whatever it needed to do to allow her muscles to grow unimpeded, whether that meant making her taller, wider, or anything in-between. Here we find Barbara flexing and feeling the strength of her new body after only a week of heavy lifting since taking the Venom.

This is Batgirl from the new Gotham Knights game. I haven't actually played the game, or really looked too much into it, but I did see that there's a cutscene where Batgirl, in civilian clothes, is deadlifting a large amount of weight. The video that I watched this cutscene in had one commenter doing some quick math and pointing out that Batgirls approximate weight compared to the estimated weight she was lifting placed her within the elite category of female weight lifting athletes. So that kind of inspired this piece.