Reginald Kastle (Shark)
Partner Character
Character Directory:
Character BioHow to UnlockLevel-Up RewardsLoop RewardsCharacter Bio:
Yuma's schoolmate was once a top Duelist on the Dueling Circuit - even making the national finals - but he left the spotlight after a cheating scandal. Everyone in school is afraid of him - his nickname is "Shark" after all.
Though he appears to despise everyone and everything, he does have a soft side - which he shows less often than an ultra rare card! With his WATER deck, Spell Card combos and Xyz Summons, Shark is ready to drown the opposition.
Shark enters the tournament to get revenge against the brute who injured his sister. He never intends to join a tag team, but the player's hounding wears him down.
How to Unlock Reginald Kastle (Shark):
Reginald Kastle (Shark) is unlocked by obtaining 1 Reginald Kastle (Shark) Character Piece.
You can obtain this by achieving 10 Cumulative Victory Points in Tag Duel (ZEXAL).
Level Limit Increase:
Character Pieces, acquired by completing the Cumulative Reward track in Tag Duels can be used to increase a characters Trust Level limit.
At Trust Level 10, using a Character Piece will increase the Trust Level limit to 20.
At Trust Level 20, using a Character Piece will increase the Trust Level limit to the maximum of 30.
Note: Using a Character Piece to increase the Trust Level limit will stop you from earning Loop Rewards until you reach the new Trust Limit cap.
Level Up Rewards:
The following items can be obtained by increasing Reginald Kastle (Shark)'s Trust Level, through dueling in PVP, Tag and Raid Duels:
 | 50x Gems | Trust Level 2 or higher. |
 | 5x Skill Material (S) | Trust Level 3 or higher. |
 | 5x Skill Material (M) | Trust Level 4 or higher. |
 | Solitary Shark Lv1 | Trust Level 5 or higher. |
| 50x Gems | Trust Level 6 or higher. |
 | 5x Black Material | Trust Level 7 or higher. |
 | 5x Skill Material (L) | Trust Level 8 or higher. |
| 50x Gems | Trust Level 9 or higher. |
 | 2x Special Skill Material | Trust Level 10 or higher. |
| Reginald Kastle (Shark) Card Sleeves | Trust Level 11 or higher. | |
| 50x Gems | Trust Level 12 or higher. |
 | 5x Red Material | Trust Level 13 or higher. |
| 5x Skill Material (S) | Trust Level 14 or higher. |
| Solitary Shark Lv2 | Trust Level 15 or higher. |
| 5x Skill Material (M) | Trust Level 16 or higher. |
| 50x Gems | Trust Level 17 or higher. |
 | 1x Master Skill Material | Trust Level 18 or higher. |
 | 5x Blue Material | Trust Level 19 or higher. |
| 5x Skill Material (L) | Trust Level 20 or higher. |
| 50x Gems | Trust Level 21 or higher. |
 | 5x Skill Material (XL) | Trust Level 22 or higher. |
| 5x Skill Material (M) | Trust Level 23 or higher. |
| 5x Skill Material (S) | Trust Level 24 or higher. |
| Solitary Shark Lv3 | Trust Level 25 or higher. |
| 50x Gems | Trust Level 26 or higher. |
 | 5x Yellow Material | Trust Level 27 or higher. |
| 3x Special Skill Material | Trust Level 28 or higher. |
| 5x Skill Material (L) | Trust Level 29 or higher. |
| 50x Gems | Trust Level 30 or higher. |
Loop Rewards:
The following items are gained randomly from the lineup each time you acquire a certain amount of Trust, after acquiring all Level-Up Rewards:
| Reward | Trust Lv.10 | Trust Lv.20 | Trust Lv.30 | |
| Gems | 40x | 60x | 80x |
| Skill Material (S) | 3x | 0x | 0x |
| Skill Material (M) | 2x | 3x | 4x |
| Skill Material (L) | 1x | 2x | 3x |
| Skill Material (XL) | 0x | 1x | 2x |
| Special Skill Material | 1x | 1x | 1x |