Not sure if collaboration units or those without a 7-star evolution usually get their stats posted, but I don't see why not.

All units obtained are at 5-star and can evolve to 6-star.

See this post on information to obtain them.

黒衣の猫魔女アリア ("Aria")

Unit Art

Lord Stats/Imps

HP: 5,800 {1,000}
ATK: 1,950 {400}
DEF: 1,950 {400}
REC: 2,000 {400}

Hits: 7 / 3 DC

Cost: 25

• LS: 20-80% ATK relative to remaining HP, 50% chance to convert 3-8% damage dealt to HP

• BB: 12 hits, 220% AOE ( 100 ATK), 80% REC for 3 turns, heal 2,000-2,500 HP ( 10% target's REC) every turn for 3 turns

  BC Cost: 25 // Max BC generated: 12

• SBB: 15 hits, 450% AOE ( 100 ATK), heal 2,000-2,500 HP ( 13% target's REC) every turn for 3 turns, 60% REC -> ATK for 3 turns

  BC Cost: 20 // Max BC generated: 15

Arena Type: 2

60% chance to BB enemy with >50% HP > 20% chance to BB random enemy > 100% chance to attack random enemy

清涼の凛剣士カイト ("Kaito/Kite")

Unit Art

Lord Stats/Imps

HP: 5,900 {1,000}
ATK: 2,250 {400}
DEF: 1,850 {400}
REC: 1,700 {400}

Hits: 5 / 5 DC

Cost: 25

• LS: 30% HP and ATK, 80% ATK for 2 turns after dealing 3,000 damage

• BB: 12 hits, 220% AOE ( 100 ATK), 80% ATK for 3 turns

  BC Cost: 22 // Max BC generated: 12

• SBB: 1 hit, 450% AOE ( 100 ATK), 80% ATK for 3 turns, 60% Spark damage for 3 turns

  BC Cost: 25 // Max BC generated: 30

Arena Type: 2

60% chance to BB enemy with >50% HP > 20% chance to BB random enemy > 100% chance to attack random enemy

爪鳴の姫猫クーラン ("Courant/Kuhlan")

Unit Art

Lord Stats/Imps

HP: 6,200 {1,000}
ATK: 2,000 {400}
DEF: 1,700 {400}
REC: 1,800 {400}

Hits: 8 / 4 DC

Cost: 25

• LS: 30% HP, 3 BC every turn, 2-3 BC when attacked

• BB: 15 hits, 220% AOE ( 100 ATK), 5 BC every turn for 3 turns, 25% BC fill rate for 3 turns

  BC Cost: 25 // Max BC generated: 15

• SBB: 30 hits, 450% AOE ( 100 ATK), 5 BC every turn for 3 turns, 50% DEF -> ATK for 3 turns

  BC Cost: 20 // Max BC generated: 30

Arena Type: 2

60% chance to BB enemy with >50% HP > 20% chance to BB random enemy > 100% chance to attack random enemy

機巧の従者ヒナ ("Hina")

Unit Art

Lord Stats/Imps

HP: 6,000 {1,000}
ATK: 1,900 {400}
DEF: 1,900 {400}
REC: 1,900 {400}

Hits: 8 / 4 DC

Cost: 25

• LS: 15% critical hit chance, 75% critical damage, 4-6 BC on critical hit

• BB: 14 hits, 220% AOE ( 100 ATK), 30% critical hit chance for 3 turns, 1 normal hit count (75% damage) for 3 turns

  BC Cost: 25 // Max BC generated: 14

• SBB: 17 hits, 450% AOE ( 100 ATK), 25% critical damage for 3 turns, 1 normal hit count (75% damage) for 3 turns

  BC Cost: 18 // Max BC generated: 17

*Arena Type: 2

60% chance to BB enemy with >50% HP > 20% chance to BB random enemy > 100% chance to attack random enemy

救国の白騎士アーサー ("Arthur")

Unit Art

Lord Stats/Imps

HP: 6,100 {1,000}
ATK: 1,760 {400}
DEF: 2,100 {400}
REC: 1,740 {400}

Hits: 6 / 5 DC

Cost: 25

• LS: 25% HP, ATK, and REC, negate all status ailments

• BB: 10 hits, 220% AOE ( 100 ATK), heal 1,500-1,800 HP ( 10% healer's REC), 10% damage reduction while guarding for 2 turns

  BC Cost: 30 // Max BC generated: 20

• SBB: 14 hits, 450% AOE ( 100 ATK), 40% damage reduction for 1 turn, 25% ATK -> DEF for 3 turns

  BC Cost: 18 // Max BC generated: 14

Arena Type: 2

60% chance to BB enemy with >50% HP > 20% chance to BB random enemy > 100% chance to attack random enemy

冥月の銀妹ロネッサ ("Ronessa")

Unit Art

Lord Stats/Imps

HP: 5,700 {1,000}
ATK: 2,300 {400}
DEF: 2,000 {400}
REC: 1,700 {400}

Hits: 9 / 3 DC

Cost: 25

• LS: 70% ATK, 30% chance to convert 25% damage received to HP, 10% chance to inflict Curse when attacking

• BB: 13 hits, 220% AOE ( 100 ATK), DOT debuff (250% 100 ATK) for 3 turns, 10% chance to inflict Sickness, Injury, Weakness when attacking to all allies for 3 turns, 7% chance to inflict Curse, Poison, Paralysis when attacking to all allies for 3 turns

  BC Cost: 25 // Max BC generated: 13

• SBB: 18 hits, 450% AOE ( 100 ATK), DOT debuff (250% 100 ATK) for 3 turns, 150% BB/SBB/UBB ATK% for 3 turns

  BC Cost: 18 // Max BC generated: 18

Arena Type: 2

60% chance to BB enemy with >50% HP > 20% chance to BB random enemy > 100% chance to attack random enemy