Protector

In-game description: "Cruiser. Heavy and slow ship. It has a large margin of safety. In addition to the combat power, it has airborne plasma cannons and automatic fire barrier systems. Can be equipped with super heavy weapons."

The protector is an apparently "heavy" cruiser, bought using crystals. Unlike other ships, the protector sees little usage outside of med-tier survival, or newer players. It is often used as a decent support ship, and despite its name is often not used to protect other ships, but is protected by other ships.

The protector is often not used in normal gameplay for one reason: the speed. As the description states, it is a heavy and slow ship, at least for cruisers. This makes it stuck in the class of ship almost always used for tactical maneuvers and quick strikes, and most do not have the health to combat higher ships. The protector is not useful in this area, and as a player levels up they either save up for a different crystal ship, or spend it on weapons. Also, despite it apparently having a large margin of safety, it has little health difference between other cruisers.