243a0200_ne_Arena_Strategy___Blue_is_Me__Advantages
[Name] Reaver [Disadvantages] Cannot attack air. Cracklings and Tanklings do decent against it. [Advantages] 
With assault charge, very effective at killing any and all ground units. No major weakness. Can be a tank with lots of armor. Can upgrade their cleave damage at the center shop.
Starcraft 2: Marine Arena Strategy | Blue is Me
Advantages