None of the Psymonsters know where Earthstormer came from or how she got here. She just showed up one day with a map of the planet and a dictionary, but neither one works very well. The map puts any location in the Psymonster World, the dictionary lists gasoline as a type of locomotive, which made things kind of embarrassing that time when Earthstormer tried to take a train to meet the royal Psymonster. Earthstormer wants to conquer the planet, but she keeps getting sidetracked by some fascinating attractions, so she hasn't really gotten around to the whole thing yet. She is also not sure what to do with the Psymonster World once it has been conquered, but she is pretty sure that whatever it is, it will be totally incredible.
She is a green alien with three red eyes, a purple dress, a dark turquoise mouth with a turquoise tongue, gray gloves and boots, a yellow belt with a pink star, and pointy ears with orange ear innards.
- Earthstormer is the only female Alien Psymonster.
- Earthstormer is one of the twelve Psymonsters who wear dresses (the other eleven are Wingflasher, Fireblazer, Psymenia, Jagger, Liberty, Contemporator, Scentsniffer, Whirlwind, Flamendancer, Princessary, and Fruitelicious).