You have answered correctly, but I reckon the questioner at the beginning has mixed up passages about antichrists with these ones about "the beast" (Revelation 13:1), who will be one person and get his Power from the dragon (Satan, Revelation 13:2), who will be the real ruler on this world, specially to this moment right before Jesus Christ comes back, save us and starts to judge anyone who prefered to deny him till the end (2. Thessalonians 1:7-9).

Of course I could be wrong, but it sounds he did mean the beast who's to find in the Book of Revelation, anyway I've seen sometimes as people confounds these passages and talked about "the antichristian" during they meant "the beast".