Mass Relay Connections Edit
- Assignment: Virmire: Assisting Kirrahe's Team → Virmire: Kirrahe's team
- Assignment: Virmire: Wrex and the Genophage → Virmire: Wrex is Convinced | Virmire: Wrex is Dead
- Omega is the final letter of the Greek alphabet and is often used metonymically to mean 'last' or 'final'. Sentry is a guardian or a gate, so the cluster's name can be taken to mean "last guard" or "final guard" as Virmire, one of the last mission worlds, is in this cluster.