Sly Avenger

The Sly Avenger is a heavy weapon introduced in the 13.2.1 update.

Appearance
It is a perfect re-skin of the Ka-Boom!It has a navy blue body with a "Z" on it's ammo cartridge, and has red details on some parts.

Theme
Superhero Themed

Trivia

 * It is one of the exact re-skins in the 13.2.1 update, along with other weapon re-skins.
 * The weapon and it's name could likely a reference to a Marvel comics series The Avengers, which could explain that the "Z" on the ammo box could be a superhero symbol.