Complex sentence: The Laughing Man is such an expert that he can "steal eyes" of entire crowds, in real time--hacking their visual cyber-brain implants, either to make himself appear invisible or to hide his face with the cartoon logo.
Split into simpler sentences: The Laughing Man is such an expert that he can "steal eyes" of entire crowds in real time. He does this by hacking their visual cyber-brain implants, either to make himself appear invisible or to hide his face with the cartoon logo.