An online bully, also known as a TROLL, is someone who uses the internet to harass, threaten, or intimidate other people. They often post offensive comments or messages on social media, forums, or other websites in order to provoke a reaction from their victims. Online bullying can have serious consequences for both the bully and the victim, including depression, anxiety, and even suicide. It is important to take steps to prevent online bullying and to report any instances of it that occur.