List of all Units in the game

5⭐
Ichigo (Bankai)

Naruto Sage Mode

Sakura Haruno (TS) (5 STARS)

Sasuke (5 STARS)

Luffy Gear 2nd (5 STARS)

Zoro (5 STARS)

Sanji Vinsmoke (5 STARS)

Shanks (5 STARS)

Goku (5 STARS)

Chad Yasutora (5 STARS)

Uryu Ishida (5 STARS)

4⭐
Chad Yasutora (4 STARS)

Shanks

Son Goku

Naruto (TS) (4 STARS)

Ichigo (4 STARS)

Luffy (4 STARS)

Sasuke (TS) (4 STARS)

Sanji Vinsmoke (4 STARS)

Zoro (4 STARS)

Sakura (TS)

Uryu Ishida (4 STARS)

3⭐
Zoro

Sanji

Ichigo Kurosaki

Uryu Ishida

Chad Yasutora

Sasuke (TS)

Naruto (TS)

Luffy

Sakura

Fate Banner (Ended: 1/25/21)
EMIYA [5-Star] - Technique

Lancer [5-Star] - Speed

Pendragon [5-Star] - Spirit

Shield Hero Banner (Beta)
Naofumi Iwatani [5-Star] - Intellect

Demon Slayer Banner (???)
Zenitsu [5-Star] - Speed

Tanjiro [5-Star] - Tech

Inosuke [5-Star] - Power

Black Clover Banner: (Ended: 3/21/2021)
Asta [5-Star] - Power

Yuno [5-Star] - Intellect

Noelle Silva [5-Star] - Speed

My Hero Academia Banner: (Ended: 4/4/2021)
Izuku Midoriya (Deku) [5-Star] - Power

Katsuki Bakugo [5-Star] - Speed

Shoto Todoroki [5-Star] - Technique

Villains Banner: (Ended: 4/25/2021)
DIO [5-Star] - Spirit

Ainz [5-Star] - Power

Light Yagami [5-Star] - Intellect

That Time I Got Turned into a Slime Banner: (Ended: 5/10/2021)
Rimuru Tempest [5-Star] - Technique

Raid Units
Kirigaya Kazuto [4-Star] - Intellect

(These are all the current limited banners)
I added everything they were missing so this wiki can help people not just show basic info everybody knows.