The "Downpour" DLC adds five more playable slugcats, all with unique campaigns, plus one secret slugcat. The game world also undergoes changes between campaigns, sometimes slightly, sometimes tremendously.
Saint (green) - Nonviolent, vegetarian, the only slugcat with fur.
Inv (black / blue) - Secret slugcat. More or less a joke, as their campaign contains various fourth-wall breaking elements and the difficulty is ramped to absurd levels. On the plus side, they start with a singularity bomb.
