Stumblebooms are Hoodbooms on stilts. They use the same attacks as their land walking version, but are invulnerable due to their stilts. The only way to defeat them is to use a Vortex powerup and target their stilts. This will result in the Hoodlums falling off their stilts and becoming the normal defeatable Hoodbooms.
It is important to note that in some of the swamp levels, they have been known to walk through the swamp water with the help of their stilts and when using the vortex power on one whilst in the swamp, they fall and get instantly defeated by contact with the swamp water.
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