Horrid king assassin bugs. Sold in groups of 3, 5, and 10. These communal carnivores are a lot less cannibalistic than their white spot counterparts in my experience. Keep them mid 70s to high 80s with plenty of moisture and food and they will make incredibly interesting and engaging display animals.
 
These pack a painful bite but are quite shy and are not defensive at all, and they will run away when touched. That being said, handling is NOT recommended. Watch them work together to take large insects down and eat it together!