User blog comment:Valeth/Caster of SIN/@comment-32751919-20190422162325

This guy is Merlin, but he seemly focused on defensive tactic with he could become OP in CCC event. (I remember that it count as waterside.) In fanfic story, he is the main antagonist or allies? (While it implied that he has positive view toward Chaldea, but still.)

So, Archer is confirmed to be his allies, isn't he?

PS. I like the servant with difficult yet awesome gameplaying style. (despite I never make one yet.)