Read the page you linked. Invader is equivalent to Task Force Commander, not Freedom Phalanx Reserve Member. My point is, since Invader is earned by obtaining the exploration badges from Mayhem Missions, logically heroes should earn an equivalent accolade by obtaining the exploration badges from Safeguard Missions. This doesn't work, since heroes can already earn the equivalent accolade (Task Force Commander) by obtaining the 6 task force completion badges. Therefore, if you create a new accolade from obtaining the exploration badges from Safeguard Missions, you also have to create a new equivalent accolade which can be earned by villains.