Carbonfras

Carbonfras is a testbed boss that was added on a unknown release date.

Design
Carbonfras is a silver hexagon with 6 railgun turrets and 6 assassin turrets each with a red colored barrel. There are six "eyes", each on the edges of the Carbonfras, and a giant eye in the middle.

Technical
The Carbonfras most likely autospins while looking at players like a sassafras and firing it most likely could have some range for shooting players from afar with its auto turrets.

Spawning
The Carbonfras won't spawn normally from a randomizer and will only be spawned if used by a beta tester or spawned in with the spawn entity command.

Countering
Despite being a boss you won't see in a regular game, it is still helpful to know how to defeat it. A bullet spammer works well, as it can easily out-firepower the assasin and railgun auto turrets.

Trivia

 * This boss may be closely related to carbon freezing.