Gastromo is a one-time character, a monster, and the main villain of the episode, Beast from Within from the first season of the animated series, Martin Mystery.
Background[]
Gastromo is a slug-like monster who possesses anyone that it can find, and reacts to salt the same way real slugs and snails do. Once Gastromo finds its host, it jumps inside the host's body turning him/her into a slug monster. This causes the host to have a large craving of anything containing high amounts of iron.
Appearance[]
Describing his appearance, Gastromo is a slug-like monster with mahogany-brown skin, six blood-red alien-like eyes, and hand-like fins.
History[]
Gastromo possessed Martin and the possessed Martin made M.O.M. and Java into slave slug monsters. Diana defeated Gastromo on her own by using an electromagnet to pick up Gastro-M.O.M. and his slaves (who contained high amounts of magnetic iron) and dropped them into a salt-water fish tank. This caused Gastromo to separate from Martin and free Java and M.O.M. from their "slugification". Then the two fish ate Gastromo, and M.O.M. had the tank sealed so she could keep an eye on Gastromo. Although it's evident Gastromo is deceased as the fish ate him, she may have meant this as a joke knowing the fate herself though she could be careful in wanting to safeguard Gastromo's remains so there are no repercussions.
Episode Appearances[]
- Beast from Within (only appearance)
Trivia[]
- Gastromo was the first monster that M.O.M. caught when she was an agent.
- He is one of the few villains who actually succeeded in his goals of wanting revenge on M.O.M to which accomplished by controlling her. Though he would be defeated by Diana and is eaten by M.O.M’s fish ending him once and for all.
- Despite Diana saving the day by defeating him and saving her brother, Java, and M.O.M., she was the one to cause Martin to be inhabited by Gastromo by scaring him when she got scared by a cat sending him into the slime that had Gastromo in it.
| Monsters and Villains | |
|---|---|
| Season 1 |
The Bogeyman • Mutated Meganeura • Mutated Insect Queen • Black Spirit • Polynesian Shaman • Leviathan • Werewolves • The Applebyes • Zook • Chaos Beast • Sandman • Siren • Clifford • Christmas Demons of the Snow Globe • The Dark Druid • Prindella Grizzwalda Dorey • Nazca Aliens • Carlin • Philus Blackwater • Dr. Green • Nadu • Icetopis • Gastromo • Doppelganger • Prehistoric Creatures • Dr. Dolphus • Mothman • Stella Odette • Dr. Miles • Sauros • Rat Man • Synths • Highly Evolved Bacteria • The First Chinese Emperor • Wu-Long |
| Season 2 |
Freeform Aliens • Sock Gnomes • Slime Replicas • Space Fungus Creature • Simone de Bastien • Djini • Montgomery Stokes • Hexan • Alpha-Omegans • The Beasts of the Perigee • Seers • Rasel • Body-Swapper • The Gateway Creatures • The Gatekeeper |
| Season 3 |
Crispangore • Damian • Vargos • Mr. Black • Lawn Gnomes • Lawn Gnome Pirate • Midget Munchkin • Mutated Sea Monkeys • Phantom Werewolf • Torrington Worm • Morcan the Warlock • Teddy • The Scarecrow • Spirit of the House Builder • The Bones • Labyrinth Creature • Barok the Faceless • Creatures of the Enchanted Keys • Jingle Jim • Venoso • Love Monsters • Mutant Venus Flytrap • Captain Blood • Zombie Pirates • Leprechaun • Octavia Paine • Ultimate Monster |