Unique
The dot left to the name indicates, that you can have only 1 "Darth Vader" in your fleet.

Rule

Star Wars Armada includes many famous characters and ships from the Star Wars universe. Each of these famous figures is represented by a card with a unique name, which is identified by a bullet (•) to the left of the name. A player cannot field two or more cards that share the same unique name.

New Rule

Some squadron cards have different unique names but share the same italicized name for their squadron type (e.g. Millennium Falcon). A fleet cannot contain more than one card with the same italicized squadron type, even it those cards have different unique names.

Source: Rebellion in the Rim Campaign Guide

Cards with Unique

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