UE12BT: Kaiju No. 8 is a Union Arena set with 120 cards on its set list. Its most valuable cards by market price include Kaiju No. 8 (055) (SR***), Kikoru Shinomiya (020) (SR**), and Kaiju No. 8 (055) (SR**).
Prices as of Oct 12, 2026
| No. | Card | Rarity | Price |
|---|---|---|---|
| UE12BT/KJ8-1-001 | Mina Ashiro (001) | Common | $0.12 |
| UE12BT/KJ8-1-002 | Mina Ashiro (002) | Uncommon | $0.16 |
| UE12BT/KJ8-1-003 | Mina Ashiro (003) · Foil | Rare | $0.16 |
| UE12BT/KJ8-1-003 | Mina Ashiro (003) (R*) · Foil | Rare 1-Star | $11.04 |
| UE12BT/KJ8-1-004 | Mina Ashiro (004) · Foil | Super Rare | $1.21 |
| UE12BT/KJ8-1-004 | Mina Ashiro (004) (SR*) · Foil | Super Rare 1-Star | $28.61 |
| UE12BT/KJ8-1-005 | Mina Ashiro (005) · Foil | Super Rare | $3.09 |
| UE12BT/KJ8-1-005 | Mina Ashiro (005) (SR*) · Foil | Super Rare 1-Star | $26.77 |
| UE12BT/KJ8-1-005 | Mina Ashiro (005) (SR**) · Foil | Super Rare 2-Star | $155.02 |
| UE12BT/KJ8-1-006 | Hakua Igarashi | Common | $0.07 |
| UE12BT/KJ8-1-007 | Haruichi Izumo (007) | Common | $0.06 |
| UE12BT/KJ8-1-008 | Haruichi Izumo (008) · Normal | Uncommon | $0.08 |
| UE12BT/KJ8-1-008 | Haruichi Izumo (008) (U*) · Foil | Uncommon 1-Star | $1.82 |
| UE12BT/KJ8-1-009 | Reno Ichikawa (009) · Normal | Common | $0.12 |
| UE12BT/KJ8-1-009 | Reno Ichikawa (009) (Box Topper Foil) · Foil | Common | $1.25 |
| UE12BT/KJ8-1-010 | Reno Ichikawa (010) | Uncommon | $0.11 |
| UE12BT/KJ8-1-011 | Reno Ichikawa (011) | Rare | $0.08 |
| UE12BT/KJ8-1-012 | Reno Ichikawa (012) · Foil | Super Rare | $7.17 |
| UE12BT/KJ8-1-012 | Reno Ichikawa (012) (SR*) · Foil | Super Rare 1-Star | $28.42 |
| UE12BT/KJ8-1-012 | Reno Ichikawa (012) (SR**) · Foil | Super Rare 2-Star | $139.16 |
| UE12BT/KJ8-1-013 | Konomi Okonogi (013) | Common | $0.05 |
| UE12BT/KJ8-1-014 | Aoi Kaguragi (014) | Common | $0.04 |
| UE12BT/KJ8-1-015 | Aoi Kaguragi (015) · Normal | Uncommon | $0.06 |
| UE12BT/KJ8-1-015 | Aoi Kaguragi (015) (U*) · Foil | Uncommon 1-Star | $1.55 |
| UE12BT/KJ8-1-016 | Kikoru Shinomiya (016) · Normal | Common | $0.06 |
| UE12BT/KJ8-1-016 | Kikoru Shinomiya (016) (Box Topper Foil) · Foil | Common | $0.79 |
| UE12BT/KJ8-1-017 | Kikoru Shinomiya (017) | Uncommon | $0.08 |
| UE12BT/KJ8-1-018 | Kikoru Shinomiya (018) | Rare | $0.07 |
| UE12BT/KJ8-1-019 | Kikoru Shinomiya (019) · Foil | Super Rare | $0.96 |
| UE12BT/KJ8-1-019 | Kikoru Shinomiya (019) (SR*) · Foil | Super Rare 1-Star | $15.76 |
| UE12BT/KJ8-1-020 | Kikoru Shinomiya (020) · Foil | Super Rare | $0.74 |
| UE12BT/KJ8-1-020 | Kikoru Shinomiya (020) (SR*) · Foil | Super Rare 1-Star | $19.06 |
| UE12BT/KJ8-1-020 | Kikoru Shinomiya (020) (SR**) · Foil | Super Rare 2-Star | $188.67 |
| UE12BT/KJ8-1-021 | Tae Nakanoshima | Common | $0.04 |
| UE12BT/KJ8-1-022 | Bakko (022) | Common | $0.14 |
| UE12BT/KJ8-1-023 | Bakko (023) | Uncommon | $0.13 |
| UE12BT/KJ8-1-024 | Kafka Hibino (024) | Common | $0.08 |
| UE12BT/KJ8-1-025 | Kafka Hibino (025) | Uncommon | $0.08 |
| UE12BT/KJ8-1-026 | Iharu Furuhashi (026) | Common | $0.07 |
| UE12BT/KJ8-1-027 | Iharu Furuhashi (027) | Uncommon | $0.08 |
| UE12BT/KJ8-1-028 | Iharu Furuhashi (028) · Foil | Rare | $0.09 |
| UE12BT/KJ8-1-028 | Iharu Furuhashi (028) (R*) · Foil | Rare 1-Star | $4.96 |
| UE12BT/KJ8-1-029 | Soshiro Hoshina (029) | Common | $0.14 |
| UE12BT/KJ8-1-030 | Soshiro Hoshina (030) | Uncommon | $0.14 |
| UE12BT/KJ8-1-031 | Soshiro Hoshina (031) · Foil | Rare | $0.14 |
| UE12BT/KJ8-1-031 | Soshiro Hoshina (031) (R*) · Foil | Rare 1-Star | $7.29 |
| UE12BT/KJ8-1-032 | Akari Minase (032) | Common | $0.07 |
| UE12BT/KJ8-1-033 | Defense Force's Tachikawa Base | Uncommon | $0.09 |
| UE12BT/KJ8-1-034 | A6-Grade Marbled Japanese Black Wagyu Beef | Common | $0.07 |
| UE12BT/KJ8-1-035 | Unleashed Combat Power, 96% | Uncommon | $0.17 |
| UE12BT/KJ8-1-036 | This Is Who I Am Right Now | Uncommon | $0.27 |
| UE12BT/KJ8-1-037 | Now It's Time For Me to Shoot My Foe | Uncommon | $0.12 |
| UE12BT/KJ8-1-038 | Screening Exam | Uncommon | $0.08 |
| UE12BT/KJ8-1-039 | Accepting Applicants | Common | $0.07 |
| UE12BT/KJ8-1-040 | Squadron-Style Axe Technique Number One - Falling Thunder | Rare | $0.11 |
| UE12BT/KJ8-1-041 | Mina Ashiro (041) · Normal | Common | $0.09 |
| UE12BT/KJ8-1-041 | Mina Ashiro (041) (Box Topper Foil) · Foil | Common | $0.28 |
| UE12BT/KJ8-1-042 | Mina Ashiro (042) | Common | $0.07 |
| UE12BT/KJ8-1-043 | Mina Ashiro (043) | Uncommon | $0.08 |
| UE12BT/KJ8-1-044 | Mina Ashiro (044) | Rare | $0.13 |
| UE12BT/KJ8-1-045 | Ryo Ikaruga | Common | $0.07 |
| UE12BT/KJ8-1-046 | Haruichi Izumo (046) | Common | $0.06 |
| UE12BT/KJ8-1-047 | Haruichi Izumo (047) | Uncommon | $0.08 |
| UE12BT/KJ8-1-048 | Reno Ichikawa (048) | Common | $0.09 |
| UE12BT/KJ8-1-049 | Reno Ichikawa (049) | Uncommon | $0.09 |
| UE12BT/KJ8-1-050 | Reno Ichikawa (050) · Foil | Rare | $0.12 |
| UE12BT/KJ8-1-050 | Reno Ichikawa (050) (R*) · Foil | Rare 1-Star | $5.59 |
| UE12BT/KJ8-1-051 | Konomi Okonogi (051) | Common | $0.05 |
| UE12BT/KJ8-1-052 | Konomi Okonogi (052) | Uncommon | $0.10 |
| UE12BT/KJ8-1-053 | Kaiju No. 8 (053) | Uncommon | $0.09 |
| UE12BT/KJ8-1-054 | Kaiju No. 8 (054) · Foil | Super Rare | $3.71 |
| UE12BT/KJ8-1-054 | Kaiju No. 8 (054) (SR*) · Foil | Super Rare 1-Star | $27.00 |
| UE12BT/KJ8-1-055 | Kaiju No. 8 (055) · Foil | Super Rare | $3.18 |
| UE12BT/KJ8-1-055 | Kaiju No. 8 (055) (SR**) · Foil | Super Rare 2-Star | $181.99 |
| UE12BT/KJ8-1-055 | Kaiju No. 8 (055) (SR***) · Product | Super Rare 3-Star | $749.80 |
| UE12BT/KJ8-1-055 | Kaiju No. 8 (055) (SR***) (Serial Numbered) | Super Rare 3-Star | — |
| UE12BT/KJ8-1-056 | Aoi Kaguragi (056) | Uncommon | $0.06 |
| UE12BT/KJ8-1-057 | Kikoru Shinomiya (057) | Common | $0.09 |
| UE12BT/KJ8-1-058 | Kikoru Shinomiya (058) | Uncommon | $0.08 |
| UE12BT/KJ8-1-059 | Kikoru Shinomiya (059) · Foil | Rare | $0.11 |
| UE12BT/KJ8-1-059 | Kikoru Shinomiya (059) (R*) · Foil | Rare 1-Star | $5.68 |
| UE12BT/KJ8-1-060 | Kafka Hibino (060) · Normal | Common | $0.10 |
| UE12BT/KJ8-1-060 | Kafka Hibino (060) (Box Topper Foil) · Foil | Common | $0.59 |
| UE12BT/KJ8-1-061 | Kafka Hibino (061) | Uncommon | $0.13 |
| UE12BT/KJ8-1-062 | Kafka Hibino (062) · Foil | Rare | $0.13 |
| UE12BT/KJ8-1-062 | Kafka Hibino (062) (R*) · Foil | Rare 1-Star | $7.73 |
| UE12BT/KJ8-1-063 | Kafka Hibino (063) · Foil | Super Rare | $3.71 |
| UE12BT/KJ8-1-063 | Kafka Hibino (063) (SR*) · Foil | Super Rare 1-Star | $18.50 |
| UE12BT/KJ8-1-063 | Kafka Hibino (063) (SR**) · Foil | Super Rare 2-Star | $114.55 |
| UE12BT/KJ8-1-064 | Iharu Furuhashi (064) | Common | $0.10 |
| UE12BT/KJ8-1-065 | Iharu Furuhashi (065) | Uncommon | $0.08 |
| UE12BT/KJ8-1-066 | Soshiro Hoshina (066) · Normal | Common | $0.07 |
| UE12BT/KJ8-1-066 | Soshiro Hoshina (066) (Box Topper Foil) · Foil | Common | $0.41 |
| UE12BT/KJ8-1-067 | Soshiro Hoshina (067) | Common | $0.09 |
| UE12BT/KJ8-1-068 | Soshiro Hoshina (068) | Uncommon | $0.11 |
| UE12BT/KJ8-1-069 | Soshiro Hoshina (069) | Rare | $0.10 |
| UE12BT/KJ8-1-070 | Soshiro Hoshina (070) · Foil | Super Rare | $0.39 |
| UE12BT/KJ8-1-070 | Soshiro Hoshina (070) (SR*) · Foil | Super Rare 1-Star | $9.61 |
| UE12BT/KJ8-1-071 | Soshiro Hoshina (071) · Foil | Super Rare | $0.82 |
| UE12BT/KJ8-1-071 | Soshiro Hoshina (071) (SR**) · Foil | Super Rare 2-Star | $115.71 |
| UE12BT/KJ8-1-072 | Akari Minase (072) | Common | $0.05 |
| UE12BT/KJ8-1-073 | Monster Sweeper Inc. | Uncommon | $0.08 |
| UE12BT/KJ8-1-074 | Now Leave the Rest to Me | Uncommon | $0.24 |
| UE12BT/KJ8-1-075 | Childhood Promise | Common | $0.06 |
| UE12BT/KJ8-1-076 | Fire Training Exercise | Uncommon | $0.08 |
| UE12BT/KJ8-1-077 | Brace Yourself | Rare | $0.11 |
| UE12BT/KJ8-1-078 | Fortitude 9.8 | Common | $0.08 |
| UE12BT/KJ8-1-079 | Hoshina-Style Sword-Slay Technique Number Six: Eightfold Slasher | Uncommon | $0.09 |
| UE12BT/KJ8-1-080 | Found You | Common | $0.05 |
| UE12BT/KJ8-1-AP01 | Action Point Card (AP01) | Action Point | $38.95 |
| UE12BT/KJ8-1-AP02 | Action Point Card (AP02) | Action Point | $50.51 |
| UE12BT/KJ8-1-AP03 | Action Point Card (AP03) | Action Point | $42.23 |
| UE12BT/KJ8-1-AP04 | Action Point Card (AP04) | Action Point | $28.83 |
| UE12BT/KJ8-1-AP05 | Action Point Card (AP05) | Action Point | $69.83 |
| UE12BT/KJ8-1-AP06 | Action Point Card (AP06) | Action Point | $24.00 |
| UE12BT/KJ8-1-AP07 | Action Point Card (AP07) | Action Point | $0.34 |
| UE12BT/KJ8-1-AP08 | Action Point Card (AP08) | Action Point | $0.95 |
| UE12BT/KJ8-1-AP09 | Action Point Card (AP09) | Action Point | $0.31 |
| UE12BT/KJ8-1-AP10 | Action Point Card (AP10) | Action Point | $0.49 |
| UE12BT/KJ8-1-AP11 | Action Point Card (AP11) | Action Point | $0.32 |