Based on Cobra-only forces (not Dreadnoks, not MARs, mercs are so-so)

Cobra Commander
Commander Vlasko (custom)
Interrogator

Crimson Guards (CC's personal body guard, also used for Tomax & Xamot; not battlefield troops

NeoVipers (when the best are needed)

Vipers (When you need guys that are on a more sensitive mission or battle)

BlueShirts (Used for everything)

Speciality troops of a certain base class get slight priority over the average version. ie; IF a squad of Vipers are hanging out with the Snow Serpents in the Snow Serpents hood, then the SSs are of higher rank simply cuz it's their turf. HOWEVER, if the Snow Serpents are chilling with the Vipers in a steamin', bloody swamp in a TerrorDrome, then the Vipers get rank.

Kinda like, who is the better Joe in the snow? Snow Job or Bazooka?

BATs are an entirely different organization. They are often used as fodder and tend to be more loyal to Overkill.

Overkill. The mad scientist of Cobra. His stroke only goes so far.

Baroness. The intelligence officer, she has no real powers of leadership but like Major Bludd or Ghost Bear, she will lead troops into battle if she must. She is NOT a fighter. She's better hanging out in the background and barking orders, like Cobra Commander.

This is, of course, part of my 'verse.