Lene

Lene is a fantastic dancer, she can not only dance, but she can also be a super defensive dancer. When Lene is in hand with Steady Breath, and Steady Guard(+Def), she will be killing people when attacked, her special will charge each time. Lene will have 42 defense when she is hit by an axe unit and will do superior when she hits. This build lets her dance and support her team while she is out in the battlefield with an amazing build.

Lene has 38 defense when she gets hit by an enemy, which gives her as an enemy phase in this build. Lene will be hit by an enemy and her special will be activated almost each time with her fast speed of 35. When Lene is plus attack, she can do a great amount of damage and finish the enemy off with a special each time. Safeguard allows Lene to have a +7 defense and refining it to +4 Defense gives her +11 defense. Steady Breath gives Lene +4 defense and adding all the numbers together, she would have an add on of 15 defense. In conclusion, Lene will have 42 defense when attacked and makes her an enemy phase unit.

When Lene has Wings of Mercy 3 equipped, she will be a saving dancer. Lene not only can dance to people with low health, but she can save her teammates with her 42 defense. When Wings of Mercy is granted, Lene can warp anywhere around the map and can save your teammates by finishing off the enemies in their phase.

Lene is not only a really good enemy phase dancer, but she can be a great booster. When giving Lene Hone Spd as her C skill, and Hone Atk as her seal, she will be granting her teammates +4 Atk and Spd each time which will make her teammates win more.

In conclusion, Lene is a really good sword dancer and can be effective as an enemy phase dancer. Lene will attack with 42 Defense and can save her teammates with Wings of Mercy. Lene will boost her teammates and make them much harder to kill. Lene is an effective dancer and is one of the best red units to use.

Since her bane was in Spd and she got an Atk boon I felt save to increase her defenses. Her Spd and Atk becomes neutral due to the Safeguard +Spd and fortress def.

With fortress def and safeguard she reaches 35 def on par with some armors in the game and 28 res allows her to tank a hit from some mages as well although not as reliably as her defensive capabilities.

She also has Miracle just incase of her HP being low and the rest of her build is very support based almost on par with P!Azura however she cant buff allies res. Although +3 to Atk, Spd, and Def is just fine.

She is mainly a buffer trying to help another ally finish off an extra enemy but if needed to she can take a hit from some enemies and dish out some extra damage to help her allies take out other strong threats.

With this build, Lene becomes a tanky supporter with extremely low Atk, but makes up for it by successfully tanking the majority of physical hits and retaliating with Ignis. Her low Atk also becomes beneficial in Arena Defense teams, as it will make her AI less likely to initiate attacks against opponents (note the 5 damage rule of Singers/Dancers) and shatter from their counterattacks.

Weapon: Safeguard+ (+Def) lets Lene boost her Defense to extremely high levels in the Enemy Phase.

Assist: Dance is used in her Assist slot. No questions asked.

Special: Ignis will cause Lene to annihilate foes once in a while due to the extreme levels of Defense she can reach with her weapon and double Fortress Def. Bonfire is an acceptable alternative.

A Skill: Fortress Def 3 boosts Lene’s Defense by 5 and lowers her Attack by 3. This contributes to her capability of tanking common physical threats like Ayra or Brave Lyn and firing off sky-high damage with Ignis.

B Skill: Wings of Mercy 3 allows Lene to fly through the map to support her allies. Alternatively, her default Firestorm Dance 2 can be used.

C Skill: Threaten Atk 3 allows Lene to passively debuff her foes’ Attack without initiating combat, further enhancing her tanking potential.

Sacred Seal: Fortress Def 3 is the ideal choice for Lene’s Sacred Seal. In total, Lene would reach up to 46 Defense. This may not seem as high as the high-defense Lukas builds, but keep in mind that Lene only exists to Dance her allies, and this allows her to tank physical hits at the same time.

I took this in a weird direction since I got weird boon/banes. Since I have Olivia spec set as an attack boosting support I wanted a dancer with the Infantry Pulse skill since it would be a wasted slot on many attacker/tank characters. This build really is only viable if you have a HP boon Lene, but a 54(49 without the seal) HP is still reasonably high considering most attack focused characters favor an HP bane. As long as the person you want benefitting from Infantry Pulse has 48HP or lower swapping the seal for a more traditional dancer seal like Spur Attack is also perfectly viable. A Mixed HP/X A slot also works but can slightly limit the people she supports well.
Since her job is supporting she won't be seeing much combat, but the few attacks she does take most likely will be ranged Holy Vestments with its low charge time can save her from an unlucky hit now and then.

The general purpose of this build is to allow lene to fight on the enemy phase while sacrificing her player phase so that she can dance to allow her other teammates to sweep potential threats.

Enemy phase lene with fantastic physical bulk and relies on her special activation to 1 round most enemies if she has a follow up attack.

The ignis activation will give her an additional 35 dmg to secure kills.

Safeguard+ (+def), steady breath, and close def 3 give an effective 17 def to bring her total def up to 44.

Atk ploy can potentially be run with a res boon against non-mages or any units with low res to help keep lene alive in encounters.