Does Mirror Image copy any Empower a unit has?

No, Mirror Image does not copy the empowered status.

Per the official rules on copy effects (Patch Notes 2026-03-30), a copy effect only copies a card's "copyable traits" — its printed characteristics and rules text. The empowered status is a granted/appended state applied by activating the Empower keyword, not a printed trait. As the rules state: "Nothing appended or granted will be seen by the copy effect."

The Reflection token will copy the target unit's base Might and rules text (including any Empower ability printed on the card), but it will not arrive empowered — it would need to be separately empowered after entering play.