Murlocs – World of Warcraft
These little fish people are another enemy that fights in packs, and that automatically amps up their annoyance rating. Any time you’re around swamps or coasts in World of Warcraft, you’re at risk of being set upon by these dudes. While they don’t look very imposing, they’re fast and can easily take out inexperienced characters. They'll even throw nets at you to stop you from running away. And they don’t confine their annoyingness to one game, either – anyone who has played against a murloc deck in Hearthstone knows how annoying they are in that game, too.