Portable Wall

Overview
The Portable Wall is an Vehicle-Metal-Ignorable type vehicle/defense introduced in the 2.7 Patch. Like the other ignorable vehicle/defense introduced in the same patch, the Sandbag Pile, it does not possess any weapons or attack methods.

It costs roughly the same as a Heavy Tank, which may seem expensive, but it has a whopping and. Unfortunately, the Portable Wall has no noticeable Armor or HP Defenses, so the combined HP will be quickly worn down. However, it does not take the DoT aspect of and, somewhat compensating for the lack of any resistances.

Because of having much more HP than  Armor, but more total health points then a Super Tank, it is rather effective at tanking damage from the Mystery Troops because very little of the health is ignored by the laser's penetrating power. At later levels (Level 66+) players could replace it with the Portable Electric Fence, since it has resistances and the option to attack. A Rank 6 Portable Wall has the second highest SP reward of any basic unit, ranking just 4 points after the Portable Electric Fence (not including Boss Strike rewards or Limited Time units) making it good for trade, but also has a higher healing cost than Wimps or Sandbag Piles. Because it is an ignorable type defense, you may put up a maximum of three Portable Walls on a battlefield at a time.

Trivia

 * You only need a Level 1 Vehicle Factory to build this.
 * This is the first player-trainable unit that health can go past total at higher ranks.
 * When viewed in the Vehicle Factory, the Portable Wall has the "Light Infantry" icon in the top left corner: Class infantry-light.png

Updates
3.5 Patch 2.7 Patch
 * Gained the Defense type.
 * Gained immunity to Flammable and Shatter.
 * Unit added.