[quote=Tatsua Aiisen]
That's the most of any canon servant, and I believe it was actually stated that he had the most, even more than Gilgamesh (who has three.)
[/quote]

There are three that are his specifically, yes. When it comes to owning Noble Phantasms, Gilgamesh trumps everyone. He owns all of them. Except Excalibur and Avalon (and probably Arondight since that's a sister-sword).

And Perseus never actually showed up, so I generally use Medusa instead, as she has three, and a sort of virtual two more. XD