From Halopedia, the Halo wiki
The Skiff is a transport vehicle employed by the Banished.
The Skiff is a transport vehicle used by Banished during their campaigns. The vehicle's design almost resembles the Prowler with huge spaces in the center of vehicle.
The Skiff was unveiled as a MEGA Brands set in 2020, with the ability to be rebuilt in two other forms. When transformed into a fortification wall, anyone shielding themselves with this will be protected at a huge height and almost 180-degree with the turret mounted on the top, when transformed into the walker, the walker has 4 legs for mobility and two fang-like in the front. The walker is granted two new weapons not present in the transportation mode.