There are many non-classed Servants summoned within the various Holy Grail Wars. Either not possessing a class as a full-functioning Servant, or being summoned into a limited container through another Servant's Noble Phantasm, these Servants fall outside of both the standard and Extra Classes. This list also includes those without a stated Class.
Known non-classed Servants
Servants with unknown class
Other Heroic Spirits
Heroic Spirits mentioned to exist who have yet to appear as Servants or have possible classes assigned to them.