An antagonistic is a character, group of characters, or an institution, that represents the opposition against which the protagonist must contend. In other words, 'A person, or a group of people who oppose the main character, or the main characters.
Don't miss used facebook. Thats all I have.
and Thats why I wrote it in my blog. IF update it in Facebook, I will be just the same as them...right hahaha.