Almost similar to his previous counterparts, but far worse than even the first two evil Invincibles, Sinister is portrayed as an emotionless psychopath like villain. Similar to serial killers and that of Conquest as he is shown with very little humanity. An example when he quickly killed the young Angstrom Jr, indicating he does not hold back or does not waste time with the goal he his given, especially the mission to kill. However, he does have some semblance of emotion even if its sarcasim.