Vagrant are small, sleek, fast aliens that resemble a Protegit. They can be found in LoW or the Epsilon Gate. They are fairly easy to destroy but in swarms can easily be overwhelming due to their numbers. It is not recommended for credit bought ships to fight these alone, as even a Vengeance can easily have a problem with these.
If you were to fight a swarm of Vagrants, you will need extra help from strong ships like 3 Vengeances or 2 Goliaths, because a swarm of Vagrants are like killing 3 Sibelons at the same time.