First referenced:
The Portal in the Forest (Part 4)
Other references:
The Portal in the Forest (Part 5), 'I think I may have somehow missed the end of the world... (Part 3)'
A cyan and yellow cloud of gas, not much is known about this entity besides apparently being hostile and/or dangerous. It can be repelled by eating a particular type of foul tasting pink bubble-gum like substance. (Unconfirmed) reference by Cristina Thompson, who spent four days escaping it in Louisiana at the age of 16.
Traits:
Colored cyan and yellow, shows some level of intelligence in tracking living entities. Causes death, although the manner of which is currently unknown. Moves approximately four miles per hour and demonstrates no signs of fatigue.