Mainstay

 is a Tier 5 Tank that upgrades from Vantalancer and Harasser at level 60.

Design
The looks identical to Vantalancer but it gains two more barrels on the outer edges of its body similar to Harasser's outer barrels. They taper in a similar way to Vantalancer's existing barrels.

Technical
Like the Vantalancer, the can become invisible by staying still. Its barrels have a similar scattered firing pattern to Harasser.