Okay! This time it is Pink! I honestly do not have any experience with this character. Only times I have seen her is on a few ally teams and she seemed pretty decent to where I could see she has some fans.
Analysis
Starting of with her HP stat, it is not all that high to be honest. But that seems to be the case with a lot of slice rainbows. They can end up as glass cannons. And wow! Her ATK stat is outrageously high! above 8600? Damn. Well at least one thing is for sure: If she only gets one hit, she is going to hit like a ton of bricks! And the nice feature is to round it out is that she has a pretty decent defense stat. So she will likely last more than one round. Overall I like her stats despite the disappointing HP.
Her skill is an AOE, which is always nice, and has about the same power of other rainbow girls with AOE abilities. So she really doesn't excel beyond anyone but neither falls short in that either. As for abilities, she has the standard decent increase in ATK for her party. She increases her own skill activation rate depending on her current skill level. This is probably her best ability as it can help her hit all the pests more frequently. But you have to invest into her to make it worthwhile. Now her boss abilities are somewhat disappointing. Compared to some of the best Boss units, increasing ATK by 20% is not all that great when Sakura is 35% and Pinkladies is 25%. Pink does beat both of them at Boss DMG at 15% compared to their 12%, but 3% difference doesn't really seem all that significant. SO she isn't likely to be the must have rainbow for boss killing, but she'll certainly fit in on a team for that purpose.
Her last ability is probably the worst and weakest point to her: Healing when hitting a nest panel. That is really only around in early game. With most of us at the levels we are at and the game at the point of development where it's at, this ability is practically useless. Nest panels are now often placed to where you can't reach and destroy them. Really sad. If FKG needs to do anything about it, they should change it to healing when encounter map roaming pests to make her more worthwhile in this sense.
Judgment: All in all, Pink is a very solid girl. But she has a few things that work against her. She's not top tier boss killer material, her HP is less than desirable, and has a trash ability holding her back. All things considered, there are other girls who made it into A tier that really earned those spots. I have a harder time putting Pink in those same ranks but can understand why others felt she deserved it. But for me she falls just short: B+
Waifu judgment
Honestly, she is a cute girl. But er color scheme really comes off as washed out to me. Almost like a water coloring artwork. Nothing stands out that makes her give me that "wow" feeling. She isn't even very curvy. I can see how she can be the waifu of many, but not for this particular ninja.
C Tier