The Viper is a basic air enemy found in almost all missions.
The Viper has very little health and only carries a slow-firing gatling weapon for offense, making it an easy target to dispatch. However, the fact that it is a flying enemy means that certain weapons will be unable to hit it and if the player's ship is using weapons of that type exclusively they will have to resort to other means to destroy them. They are frequently spawned by Air Bases.
Its elite counterpart is the Asp.
| Fortress Destroyer Enemies
Enemies listed in parentheses () following another enemy are the elite form of that enemy. If there is no elite form listed, that means one does not exist or has not yet been added to the game.