Warning: Spoilers for the Borderlands seriesBorderlands is Gearbox Software's flagship looter-shooter franchise, and is largely responsible for having kicked off the genre boom starting in the late 2000s. The series sees players taking on the role of a mercenary Vault Hunter in an often zany sci-fi future. Borderlands popularized many genre mechanics and also introduced fans to a colorful cast of characters ranging from hilarious to detestable and all areas between.