Injustice: Gods Among Us (2012) is an older game at this point graphically. I got to work on several characters and props for the console version like Lex Luthor's exosuit and the Atlantean soldiers, but what has stuck with me over the years is the work I did on the mobile game actually. The picture directly below is something I still use as an example to students and colleagues when we are working on lower end hardware. The images on screen left labeled mobile are my low resolution redo's from scratch for the characters faces as compared to the console faces I did not work on. The console faces have thousands more polygons in them, full console materials and much larger budgets all around, however in most respects because of a good use of resources and knowing our limitations the mobile characters look superior.
The mobile team was very small and nimble, because of this I often got to wholesale pitch and design character skins. Batman Returns Catwoman, Batman Beyond , Animated Series Harley and Darkseid are all results of me pitching. Darksied in particular was based on a piece of concept art I provided and was approved by DC/WB before being put in the game. Ultimately the popularity of those skins was a valuable addition to the games overall revenue.
Below are some images of the work I did for some of the console characters. Due to the constraints of the pipeline/studio workflow at the time, all the characters had to be completely water tight with no disconnected meshes or overlapping/penetrating pieces. This made them quite complex topologically at the time.