In early designs, Alibaba was supposed to be a gladiator, with a quieter and inexpressive behaviour. Ohtaka discarded the idea because, according to her, she's better creating more expressive characters. This ideas, however, got her into creating Masrur.
Ohtaka once said that Spartos was originally supposed to be a woman.
Hakuryuu was supposed to be the older brother and Hakuei the younger sister, Ohtaka mentions that the story would've been quite different.
Ohtaka also originally thought of making Drakon and the similarly draconic Shou En (one of Kouen's household members) brothers.
Marga originally was going to be older and Titus' love interest.
Word of God wanted to draw Yunan as a middle-aged man, but she was requested to draw him as a delicate man. That's why she tried to draw him with the feel of a tired widower.