a grammatical category used in the classification of pronouns, possessive determiners, and verb forms according to whether they indicate the speaker, the addressee, or a third party
Stop talking about yourself in the third person.
source: WordNet 3.0
A character or part, as in a play; a specific kind or manifestation of individual character, whether in real life, or in literary or dramatic representation; an assumed character.
source: Webster 1913
verb
To represent as a person; to personify; to impersonate.