FF4 The After Years

[Ultimecia]

Now you mention it, there was a secret enemy that used the old Calca and Brina dolls (the smaller dolls) in Rydia's chapter. I recall to spend one week fighting them to get the items I needed to fix Calca and Brina and looks like it's missing, or I'm not just looking hard enough?
And Ton is right, many of the monsters are from the GBA version of FIV and the other games.