A massive Daphnia measuring 20 meters in length; even the smaller ones are the size of an adult man. It uses its second antennae to snatch people and pull them into its body. By consuming nutrients, it produces and expels eggs that hatch into more water fleas.

A colossal amoeba that clings to surfaces throughout the city like a sprawling web. It has developed eye-like organs to monitor people, capturing and absorbing any prey it spots.

Euglena measuring about 30 centimeters each. Though small compared to other Megabiotes, they move in swarms, overwhelming people like a flood. Once they catch prey, they latch onto the body and begin to feed.

A flatworm with a 50-meter main body that attacks people alongside a swarm of smaller clones separated from itself. The main body extends tentacles; if these are severed, they become small planarians that join the attack.