I got 40,000 friend points from a login event a while back and used them to get some 3* Servants to NP5, but I never saw Bedivere, Jaguar Warrior or even Caster Gilles appear once. Are they only available in the story gacha?
As far as I know, yes they are featured in the story only. I noticed Jaguar Warrior is featured in the current valentine banner, because I got 2 copies of her from there and got her to NP3.
So maybe Bedivere is featured in the male banner right now
Yes. All male servants are on the Male Banner. Even story locked ones. I got 2 copies of Bedivere and a copy of Caster Cu yesterday.
Story locked servants are never in the fp gatcha, unfortunately. Took me forever to realize that is why my caster cu never got np2 because I never roll in the story summon.
