Ranger is a Strogg without implants.And here is the evidence.
- In Quake 1, the emblem of Ranger's military organization is a skull with stylized wings. In Quake 2 and 4, the same emblem represents the Strogg.
- Ranger is counterattacking an invasion of Lovecraftian monsters who come from a military teleportation device called Slipgate. In Quake Wars, the Slipgate is Strogg technology.
- In Quake Wars, the Slipgates are shaped like a Quake 1 symbol.