[quote=@arowne97]
His personality is determined by the Era in which he's summoned into. The era of Fate/Zero and Fate/Stay Night was really shitty, so he had an asshole-ish attitude. In Fate/Extra CCC, he was content with the way the world was, so he was nicer. Nasu wanted to show that there was more to Gil's personality than just his arrogance and asshole-ness.
[/quote]
That seems... kinda bullshitty, since he seemed like he was an asshole not because our era was shitty, but because he was one to begin with, in terms of logical sense anyway, even if creator said otherwise.

I mean, come on, what kind of logic is that? He wanted to rape Saber for Christ's sake. What, he thinks the women of the medieval era to be sinners so he wants to rape them or something?