Olivia

(Stats are +Spd, -Hp with Weapon refinement and skills applied. My take on Olivia will use these stats for review)
As a free unit from the rotation, she's one of the best ones we currently have. But within the Dancer/singer class, she's often looked down upon as unimpressive and lackluster compared to the others, but today I'm gonna do Olivia some justice, and prove the isn't just your average shy dancer.
1. Just like stated in her review up top, the utility of Dance/Sing is unmatched both on offensive and defenseve strategies, which gives the performers other qualities and roles that the other unit can't have. As such, I will continue to compare Olivia to her fellow performers since this is only fair.
2. Fun fact of the day: Olivia has the highest defense out of all of the performers currently in the game. To put this into perspective, a neutral defense Olivia still has the highest defense out of all of the performers even if they have a +def IV. Combined with her Hp, she has a total of 63 natural Physical bulk(60 with -HP), the second highest of all the performers just below Ninian(65 Physical bulk), with Fury 3, it increases to 66 and a refined weapon increases it to 71.
3. This is where I disagree with the review up top. While 26 resistance doesn't seem flattering, it's not that bad either, and it's not worth lowering with a bane. 62 magical bulk(59 with -Hp) is not that bad especially if you consider she doesn't have a paper thin defense to make up for it. Fury 3 increases it to 65, and a refined weapon increases it to 70.
4. Combining points 2 and 3, Olivia has the second best overall bulk of all the performers with a 63/62 bulk for physical and magical attacks respectively, the only performer who has higher overall bulk than her is Ninian, with 65/69 bulk respectively. Thanks to this, both dancers can perform the role of an emergency tank when needed. This is extremely effective cause with 33Spd that can be increased to 39 with the right investment(42 if +Spd) it means that the only way to knock out Olivia in one battle from full Hp is to OHKO them. And for that to happen a neutral attacker must reach at least the minimum of 63/62 Atk or 71/70Atk if Olivia has been properly invested, which no unit without advantage can reach naturally, and even then some blue units struggle to OHKO so that should tell how an impressive once person battle tank she can be for dancer, while doing consideration damage if she can retaliate. Brave Lances are threats for obvious reasons, but Brave Swords and brave bows may sometimes struggle if their attack isn't high enough to break through and all Brave Axes fail to ORKO her.
I Really hope I showed Olivia's hidden strengths today, she's not just a pretty face who can dance, but also a unit who can save your Arena run or GHB challenge with her hidden tankiness. Recommend building her to the fullest.

As a +10 4-star with Fury, Olivia has over 30 points in every stat and becomes a very strong generalist while retaining the ability to bequeath her action to an ally. Wings of Mercy, Hone Atk and Hone Spd let her buff an ally and rescue them when necessary, and she has a high combative ability with Wo Dao and Moonbow. Substitutes can be used for her B and C slots as well as her seal if a stronger offensive presence is desired, such as Wrath, Desperation, Swordbreaker, or Atk/Spd Smoke

10/10 the best meme build i have
so busted

Wraith in general is so busted O_o
Olivia literally just gets knocked down to half HP and then gets a proc towards Moonbow every turn, and then hits fools for 45-66 damage, and then doubles most of the time because of her IV's and hones.

Hectors and BIke's are toast, along with all the rest of the Greenies.
Swordbreaker is a reality check though and you should avoid units with it at all costs... you'll remember that Olivia is actually a squishy, and that you're a fraud for thinking she's your best swordie.

2.0 edit: Wo Dao+ is even more terrrrific now. HP is patched up; more speed; and now I can use Olivia as a Buffer buddy on my Arena team :D

Perfect red dancer. Wo Dao's effect paired with Moonbow turns her lackluster attack into something to be feared. Fury 3 will assist you in activating Vantage 3 allowing Olivia to bait, and safely defeat, dangerous units like Hector. Also in addition to providing dance she will serve as a powerful buffer providing Attack +4 and Defense +4 to adjacent units at the beginning of each turn.

Wo Dao (+Spd) is chosen over Wo Dao (+Def) because of Fury 3. The extra speed allows greater potential for performing double attacks and defense against double attacks from some of the fastest units. This outweighs the 4 Defense you could gain since you will essentially take that damage anyways through the 6 damage you take from Fury 3.

The point of this build is to work Olivia into a dancer that can take on Heavy Armored units, while also keeping her utility as a Dancer. Fury increases her Bulk, Wings of Mercy is great for mobility on any map to help either attack or dance an ally, C skill is up to personal preference, I chose Hone Atk 3 since she already has it, Seal is up to preference too, but I chose Close Def 3 to enhance her dueling potential. Moonbow is help cut through heavy defenses as Olivia's attack isn't that strong without an attack boon, (mine is +Spd) so she has 39 Speed with a boon and Fury, which is great defensively and offensively. Bonfire, Ignis, and Luna are also good on Olivia depending on your team, though with utilizing Fury, she will need support from the team to use the longer cooldown Specials. If you have a +Attack Olivia, Glimmer may be an option depending on your build. Anyways, thank you for reading thus far, and I hope you pull something from this!