[quote=@Fish of Oblivion]
I'd be careful with the wiki; it's not exactly the most reliable thing ever, especially in regards to details like this. Basically, I think that only applies to Counter Guardians like EMIYA (Saber/Arthuria was also a Counter Guardian, albeit with a different case from EMIYA)- since they're somewhat different from normal Heroic Spirits because of their contract with Alaya. EMIYA turned out as such a bitter asshole in part due to being able to remember the various massacres he took part in as a member of the Counter Force.
[/quote]

one funny thing about EMIYA is that he completely ditched his real name as of Fate/Extra. >.>