[quote=Prince of Seraphs]
[quote=The One]
Also, sheik IS Zelda. It should be impossible for them both to be active at the same time.
[/quote]

In our version Zelda's mother the Queen was raped by a Shiekah. Impa soon after killed the man but the damage was already done. The Queen was pregnant. The King and Queen decided to raise the child as there own. So in this version Sheik is the older half-brother of Zelda though at present he acts basically like her body guard like Impa does in OoT

And Cia is the main villain of Hyrule Warriors. Though given the time that has passed in all likely hood if she was introduced as a character she'd have to be a reincarnation and since Ganondorf is currently present in the storyline that means Cia wouldn't be evil. So Volga and Wizzro wouldn't necessarily be required.
[/quote]

There really isn't much of a traditional timeline here.