The defenseman are a profession among the K'kaan race which was not a military one but one of a scholar who were dedicated to the science of conflict. They were dedicated and steadfast; resolved in protecting their world from threats such as the Goa'uld.
They were more capable of reacting to the unexpected compared to their brethren, however, they tended to wait, observe and collect as much information as possible on the situation before acting. (RPG: "First Steps: The Stargate Unexplored Worlds Roleplaying Sourcebook")
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| Individuals | Defenseman • K'kaan investigator • K'kaan scholar • Rrk Ssk'kaa |
| Planets | K'kaa • Makkahn Ahk |
| Technology | Cloak of invisibility • K'kaan hand computer • K'kaan stealth screen • K'kaan stunner • Stealth field belt |