Who are Christians?

Indiviual that placed their faith in Jesus Christ, repented of their sins, and are born again through the Holy Spririt.  They are followers of Christ.

 Acts 11:26

And when he had found him, he brought him unto Antioch. And it came to pass, that a whole year they assembled themselves with the church, and taught much people. And the disciples were called Christians first in Antioch.