User blog comment:Hitsuji Mamoru/Servant Creation Room 2 : Guess of the Who/@comment-4802891-20170311133203/@comment-4802891-20170311180023

I knew you were going there with that question^^" Sorry!

Yes, he can be summoned in other Classes : Lancer, Berserker and very rarely Caster (and even more rarely Archer). As a Rider, he possesses 3 armament-type Noble Phantasms, two of them being very famous, but because of the state in which he was summoned, he can't use them at their full potential.