The Great Wall Train is a vehicle owned and operated by the tigers.
The train is powered by a workforce, sometimes that of captured slaves, quickly pulling strings back and forth around pulleys to travel at high speed. It has been known to reach such speeds as to travel through time.
- Real world special relativity theory does state that an object traveling at high speed will experience time differently than objects which are not. However, in real life, an object that has traveled at high speed will be found to have experienced less time upon reentering the same frame of reference, rather than more.
- HighRoller was likely trying to travel at the speed of light, as there is a theory that if you can travel at the speed of light, you can go back (or forward) in time.
- The train's appearance resembles the Great Wall of China.