These may be the same characteristics that you need to acknowledge or incorporate into yourself.
The dream may also be a pun on her or his name.
To dream that you are an actor denotes that your hard work and labor will be well worth it in the end.
It also indicates your strong desires to be recognized and acknowledged. Perhaps you are putting too much emphasis on your outward appearances.
Alternatively, the dream may be analogous to the role that you are playing in your real life, whether it be the role of a parent, sibling, co-worker, etc. Or perhaps you are putting on an act or a facade.
More specifically, if you dream that you are a supporting actor or supporting actress implies that you need to be supportive to those around you. It may seem that your presence doesn't matter, but you play an important part to someone's life.
To dream that you are an extra in a movie means that you feel unimportant and unnoticed. Sometimes you feel you are blending in with the background.
To see an actor or actress in your dream represents your pursuit for pleasure.
Your admiration of a particular celebrity may lead to a desire to have some of their physical or personality traits.
Consider also who this actor/actress is and what characteristics you associate with her or him.
To see a particular actor or actress in your dream look at the role they are playing. Even though you may not know them on a personal level, how you perceive them or the characters they play can provide understanding in how it relates to you.