The Mushroom is a sessile alien creature found on the lava planet Lavatron.
Mushrooms are large, plant-like creatures that resemble their namesake. They have a long wide mouth, with a singular eye on top of their heads. Their bodies are covered in ringed spots.
If a foreign creature comes close to them, then they will naturally respond by releasing a cloud of spores as a repellent, with enough pressure to send the creature in question flying.