Here’s a rare example of kids teaming up with monsters to fight other monsters. The monster being fought in this case is Randal Boggs, a monster with the chameleon-like ability to completely blend in with his surroundings. His evil scheme involves a device that will extract a child’s screams. Randal doesn’t even get a properly monstrous demise; he just gets beaten up by a trailer park denizen who thinks he’s an alligator.
The kids in The Monster Squad don’t just happen to run afoul of evil creatures. They do it deliberately, in search of an amulet made out of “good”…or something like that. Anyway, they run up against Dracula, Frankenstein’s monster, The Wolf Man, a mummy, the Creature from the Black Lagoon, etc., as they search for this magical amulet. The amulet ends up opening a portal to limbo which all the monsters get sucked into, leaving the world safe from their possibly-trademark-violating evil. Thanks, kids!