Will-O'-Wisp

Just got one from pal egg.

Is it it's first form or it's evo form that's for S-Ranking? How does S -ranking for tamadras workj?

compared to werewolf: 25% more HP, 121% more RCV, 7.4% less attack. Werewolf is great for 1 star attack but this guy is better overall as a 1 star. Same xp curve and cost but higher weighted stats. It is fire instead of dark though.

Low * rarity, but has some stats higher than say evo masks. S-rankings are mainly based on total team rarity.

Yea, I just noticed it has a ton of armor AND a ton of HP, so only doing 1 dmg over 1000~ times is really annoying and stupid. I understand having a strong boss or a strong monster, but this isn't funny how long it will take.

The only reason to keep these 1* monsters is to put a team together for S-ranking certain dungeons for a free tamadra. Early in game they can take up a lot of space you don't have but when you are ready to try S-rank dungeons they will be sooooooo hard to get (thank you gungtroll).

as far as taking this monster down i used poison on it and it seemed to work

You need an armor break sub. Ex. Golem etc

Me either. I went in with a water-based/weighted team. Landed a 32 hit combo, and armor break, and still just sprays 1's out, and that health bar doesn't move, its not worth playing anything in the halloween costume party as long as that stupid wisp is in there :(

Is there a way to complain to gungho?

Also recommending poison, I used Lilith and wiped him out pretty quickly^^

I just beat one easily after sever hits only doing 1dmg. hit him with a full row of water. it will do big damage and take him out.

Probably the easiest to obtain monster that can take it out is Ice Samurai Ogre (true, Ice Armor would be more effective against boss, but Samurai is worth holding on to for other dungeons such as Tengu) with its active, or Water Horse Kelpie if you have one. I agree that they should have scaled down defense at lower difficulties though.
If you have a monster from the REM that gives a multiplier to a Water Att. monster you have, use it by all means.

I should mention that I was also using dawn indigo dragon caller, sumire - her leader skill is 4.5x atk for attacking with 5 orbs

Something that I lucked out with was having a monster on my team that had a special ability involving a water attack (the kind that are like "30x Water attack is made and blah blah). Unlike getting monsters with shield breaks or poison (which can be difficult or impossible to find for lower-level/new players), monsters that attack "out of turn" are much more readily available. I would assume over types (fire, light, etc.) would also work, but I haven't tried.