Removing followers or henchmen in Fortnite is one of the quests that you need to complete before unlocking the Doctor Doom skin, and there are a few steps that you need to follow before you can do that. This is the best way to get rid of henchmen or followers and complete the quest with ease.
How to EASILY Remove Followers or Henchmen – Fortnite Doctor Doom Quest
The best way to defeat Henchmen in Fortnite is to find the Tactical Grunts in Castle Doom and take them out. Finish them off once they're down (this counts towards your quest progression).
You can also look for Henchmen in The Raft, Doom's Courtyard, and Doomstadt. This is also the best way to eliminate Henchmen, as it will automatically progress you in the quest that requires you to eliminate players in Castle Doom or Doom's Courtyard.
There will likely be a lot of people present, so make sure you have good weapons and ammo before going out to look for the Grunts.