The Mean Street Underground is a place in Epic Mickey 2 that connects Mean Street South and Mean Street North. The name, as it suggest, is located underground. It can be accessed by two hatches, one next to Horace's Detective Agency in Mean Street South, and another located in a small building under Mean Street North. The underground separates Mean Street North and South by a river of thinner and a small abyss. the player needs to, as Mickey, toss Oswald in the air and hover over using the various air streams blowing up over the abyss. Once Mickey has safely crossed the abyss, he can use the Mean Street North Elevator or Mean Street South Elevator to get out.
- When the player looks at Mean Street North from Mean Street South, or vice versa, it is visible that the other half of Mean Street is very far away. However, the underground shows that it is separated by a river of thinner. How does this work?
- Gremlin Flynn can be rescued from a cage, in accordance with the Gremlin Cage quest. He will then unlock the balloon that can speed Mickey across the big gap separating the two halves of Mean Street for 20 E-Tickets
- Gremlin Flynn will also remark, "fuels been pretty scarce since the quake", thus the reason why he charges Mickey 20 E-Tickets.
- On Mickey Mouse's second and third visit to the Underground, there will be some hovering platforms with Chests, each yielding Generic Pins.