Complete the indicated task to unlock the corresponding character.

First Generation Heroines, Leonhardt, and Ellis
Complete the first Event in Trizon Fortress and Generation 1 (Lucrellia)

Second Generation Heroines, and Ladius
Complete Bethesda Fortress and 2nd Generation (Graccia)

Third Generation Heroines, and Thoma
Complete the First Generation.

Fourth Generation Heroines, and Duran
Complete Loger Forest(Gen2), and Generation 4 (Enhambre)

Rex and Dyshana
Complete the Scarred Mountains(End of Gen2) and 5th Generation (Aegisthus)