Malodor is a small dark creature . Its face is obscured by permanent darkness, save for two glowing white eyes. Malodor appears to wear a dark gray fedora-like hat, although that is most likely a part of its body. Around its neck is a silver scarf-like appendage that resembles a metallic tube. The tub encircles the base of Malodor's head and continues down the front of its body, ending in a circular piece with a black mark in the center. The tube is segmented completely. Malodor seems to wear a black cloak.
Malodors are able to release toxic gas from the black circle on its scarf. These gases can cause both Meta Monsters and humans to become physically ill.
Malodor are solitary creatures that prefer to keep to themselves.
Malodors can be found in forests, although they can be seen in suburban areas.
It transforms into Toxious at Level .
"Malodor attacks its prey by releasing toxic gases from the black spot on its scarf."
- Malodor is the seventeeth Meta Monster in the Encyclopedia.
Malodor is based on a cryptid known as the Mad Gasser, a shadowy being that was supposedly seen spraying toxic gases into peoples' bedrooms at night.
Malodor is a combination of malady, meaning sickness, and odor. It also includes mal, meaning bad.