Note on Canon Characters

Canon Characters - a taboo that would get you beaten half to death on the majority of decent RP sites out there, and with good reason. However, in Fate there is a beautiful system known as the "throne of heroes". Let's take a look at the wonderful illustration of it in action. 


Essentially, even after Iksander died during the events of Fate Zero, a different version of him could be summoned in a later grail war. As such, we are allowing servants that have already been summoned in an earlier war. That being said, as they are the "real form" of the heroic spirit (the shattered grail no longer supporting the throne program) they would have none of the memories and would likely have a slightly different personality and appearance. 

TL;DR | Pre-used character IDEAS are allowed, don't copy the actual servant. No canon mages or normal humans allowed (and no Emiya / Archer)