Boss Kristallin are the small dark blue aliens that are four times as strong as regular Kristallin. They have the same damage as a Kristallon but are much faster. They should be dealt with caution as they are agressive and shoot on sight. The reward for destroying one of these aliens is worth the time and effort. They also give more rank points than a Cubikon. (Cubikon gives 10, Boss Kristallin gives 12)