Smashrooms are mythigical beasts that reside in the Deepest Darkest Woods, that are basically fungi creatures. They first appear in the Mighty Magiswords TV episode, Mushroom Menace. They are voiced by Hal Lublin.
In it's first appearance, Mushroom Menace, the Warriors were hired to get rid of the Smashroom before it destroys The Mysterious Hooded Woman's pumpkin home. The Zombie Pumpkin Magisword starts crying because it was afraid of the creature, rendering him useless. Vambre tried using the Wickersnapper and Wad of Gum Magiswords on it but since there powers were based on items made from trees, the effects were no use. Vambre tried vanquishing the beast with the Musculary Arm Magisword while singing to the Zombie Pumpkin Magisword to make him feel better. Zombie Pumpkin reveals that his powers are immune to fungi as his powers are plant-based. But luckily, the Zombie Pumpkin Magisword grew from eating a seed from the Mysterious Hooded Woman's house and was able to defeat the Smashroom at ease.
- Super Strength: The Smashroom is so strong that it can penetrate any tree or building.