Smashers are one-eyed, red, crab-like creatures with four legs and a white chubby body. They spin their legs like helicopters when flying. When a target is below them, they inflate their body and crash toward the target. They seem to be distantly related to Hunter Walkers, as they have one eye and the same type of legs as Hunter Walkers do. They are seen in the Invader Hive and in hard mode only.
- it also appears in Metal Slug Defense and Metal Slug Attack with the same manner attack as on Metal Slug 6, it can distract enemy fires to shoot smasher or block dashing type unit from advancing
|Human||Rebel Infantry | Arabian Infantry | Samurai Infantry | Pirates | Scientists | Ptolemaic Infantry | Natives | Hunters | Future Rebels|
|Undead||Mummies (Mummy Generator) | Dog Mummy | Mutated Soldiers | Zombies | Tar Man | Clones|
|Mutant||Bat | Chowmein-Conga | Ohumein-Conga | Enormous Moray | Jellyfish | Flying Killer | Man Eater | Huge Locust | Sasquatch | Maggot | Big Snail | Giant Caterpillar | Squid | Huge Ivy|
|Alien||Monoeye | Ring Laser Mecha | Hopper Mecha | Mars Mecha | Mars People | Big Eye | UFO | Mini-UFO | Invader Squad | Winged Invader | Flying Parasite | Hunter Walker | Hunter Lord | Scavenger | Crab-Tank | Vanguard | Smasher | Invader UFO | Indestructible UFO | Flying Core|