Black Bottom is in the Factories District and contains a large oil refinery.
Saints Row Edit
In Saints Row, the Carnales own the neighborhood. After killing Hector Lopez, Julius Little sends The Protagonist to "tag up" the Carnales' refinery and drive them out, reclaiming the neighborhood for the 3rd Street Saints.
Saints Row 2 Edit
The Hitman target Mitri spawns near Spelunkers.