| Description | Humanoid, Bipedal |
| Size | Medium |
| Skin Pigment | White |
| Hair | Varies (light) |
| Distinguishing Features | Human in Appearance |
| Series | TOS: "Arena" |
| Planet of Origin | Metron |
| Quadrant | Alpha (assumed) |
| Background | The Metrons are probably entity without a definite form. They have equipped with incredible powers, which, for instance, that of move a spaceship of 500 parsec in an only instant. They don't admit arbitrary intrusions in their territory. |
| Editors Notes | The Metrons are a highly advanced race of which there is very little information. It is assumed that each individual Metron is capable of liveing more than 1500 years. |