Quote Originally Posted by ChibiKika View Post
Speaking in terms of Nutaku Aigis, of the classes I'm familiar with I'd say I have the most trouble understanding the value of ninjas (more specifically the iron/copper ninjas). I see them being used in event demonstrations from time to time but frequently their damage rating is so embarrassingly low that short of the standard goblin, just about everything can kill it. I tend to go pretty far off the books in UP spending so for them, if there isn't a specific reason the ninja is being used (sniping a mob on another road), I tend to throw in my Valkyrie instead, and have a princess replace where I'd use the Valkyrie if need be.
The times I've seen them used they are mostly treated as another archer in a melee slot, not as a melee unit. They are also used in the low rarity runs, so if you are already using Bashira/Spica/Nanaly instead of Soma/Daniella, the ninja will probably not be needed. But depending on map and/or strategy, a ninja may save you a little time, and a copper ninja is something most of us should already have (and not use).

P.S. It is possible that there are videos that put ninjas as a melee unit, though I don't recall seeing any of those recently.