The Mashou Heki (魔性壁) was a Third Stage obstacle that was the final obstacle before the Final Stage in KUNOICHI 2007.
While the obstacle was never attempted, it was meant to be a more elaborate version of the Sending Climber, Hang Climbing, and Kabe Nobori from SASUKE, being a gigantic rock wall with five wall sections that the competitor must climb across.
- To reach the first section, competitors must transition by swinging to it via a rope. From there, they must cross this wall horizontally via small rock-climbing artifacts to reach the next section.
- The second section is another horizontal wall 90 degrees to the right of the first, and likewise has several rock climbing artifacts to hold onto. Competitors must once again cross this section horizontally.
- They must then transition to a vertical wall that is 90 degrees to the right of the first wall, with fewer, but present, rock-climbing artifacts. They must climb up this wall to reach the fourth section.
- From this point onward, the rock-climbing artifacts scattered on the wall are much more numerous. The fourth section is at an unknown acute angle, about 45° incline and must be climbed upwards.
- The final section straightens up to around the level of the Mujouheki from KUNOICHI 2006 New Year, but is noticeably longer than the previous sections in height.
Unlike most obstacles in the Third Stage at the time, the Mashou Heki was clearly a more strength-based obstacle, indicating the need for a different strategy. The obstacle's height also required competitors to wear a harness, based on footage of testers on the obstacle.
However, when the course was re-created as a racing competition in KUNOICHI 2009, the Mashou Heki and the remainder of Third Stage were all replaced with the Flying Roll.