Developed by the Regular Army's engineers, the SVX-15D Slugnoid is a bipedal mech designed for combat in difficult terrain. It is equipped with rocket boosters that allows it to jump very high.
Its main armament is the two Vulcans attached to each of its sides, capable of rotating 360° and firing in different directions at the same time, although this requires some practice to control. The secondary weapon is an incendiary shell, which is fired from its frontal 120mm cannon in the pelvic area, excellent for decimating troops on a particular area (downward in gameplay). However, the Slugnoid is very slow and cumbersome and will lose one of its Vulcans whenever it is hit.
The Slugnoid faces the front of the screen and moves sideways like a crab. In Metal Slug Infinity, it instead faces to the side and walks forward as any other bipedal Slug.
When using the Metal Slug Attack, it jumps straightly upwards before falling. Any objects it hits during trajectory makes it instantly explode.
The Slugnoid is worth 200,000 points in the Recaptured Prisoners screen. In Metal Slug 2, it is instead worth 100,000 points.
|Slugnoid: The original bipedal mech. It appears in Mission 2 of Metal Slug 2/X, Mission 5 of Metal Slug X, and Mission 3 of Metal Slug 7/XX.|
|Slugnoid (Iron Lizard): This special variant of the normal Slugnoid which its incendiary cannon shells are replaced with powerful fat, white Iron Lizard projectiles that literally run to the nearest enemy and explode. These bombs are able to transverse through the environment by jumping across platforms to reach for nearby enemies. The bombs can either trip and explode or briefly stop themselves to take a breath.
|Slugnoid Type-R: A red-painted Slugnoid with a reverse functioning Vulcan similar to the SV-001 Type-R and equipped with fat, white Iron Lizards. It appears at the end of Mission 1 of Metal Slug 3, when traveling through the Slug Mariner or Sunken Ship routes. A second one appears if a second player is playing as well.|
|Slugnoid Type-B: A blue Slugnoid with a higher jumping capability than the standard version. It appears in Mission 4 and Special Training 5A of Metal Slug 7. In Metal Slug XX, the Ostrich Slug replaces it in Mission 4.|
|Slugnoid Type-Ikari: A dark-red Slugnoid especially built for the Ikari Warriors piloted by Ralf Jones. It has increased endurance for tough battlefields. It appears in Metal Slug Attack.|
|Slugnoid Type-G: A gold-colored variant piloted by Clark Still in Metal Slug Attack. It is much more agile and durable than its predecessors and uses more powerful Iron Lizards.|
- It is possible to get up to three Slugnoids in Metal Slug X during the Mutants sewer section of Mission 5 which can easily destroy the boss. Two of them being available by winding up levers and one of them appearing at the end of the level.
- In Metal Slug Defense and Metal Slug Attack, the Slugnoid fires double machine guns instead of Vulcan cannons, and its special attack uses a fat, red-colored Iron Lizard instead of the white ones like the arcade counterparts.
- Though it does not have any protection on the driver's seat, the Slugnoid can still protect the player's character unlike the other Slugs with no hatch, helmet or protective covers.