The term that would best refer to the ability of a performer to bring the character he/she portrays to life is called the "characterisation." Furthermore, characterization is the process of representing the character that is currently portrayed in some works of dramatic narratives and other literature.
<em>Not really but I will wear this shirt that basically has the date of when he was born I guess I should do that on his birthday but oh well! <3</em>
<em>- Yaoii</em>