There is only 1 king, Jack Atlas. However, Shark is technically an emperor.
Scar-Red Familiar / Red Familiar
Dark Fiend / Effect
LV4 1600/0
You can only use this card name’s (1) and (2) effects once per turn each.
(1) You can Tribute 1 Fiend monster, then target 1 DARK Dragon Synchro Monster in your GY; Special Summon it in Defense Position, but negate its effects.
(2) You can banish this card from your GY, then target 1 DARK Dragon Synchro Monster you control and declare a Level from 1 to 8; that monster becomes that Level until the end of the turn.
Crimson Resonator
Dark Fiend / Tuner / Effect
LV2 800/300
You can only use this card name’s (1) and (2) effects once per turn each.
You cannot Special Summon monsters from the Extra Deck during the turn you activate any of this card’s effects, except DARK Dragon Synchro Monsters.
(1) If you control no monsters: You can Special Summon this card from your hand.
(2) If the only other monster you control is exactly 1 DARK Dragon Synchro Monster: You can Special Summon up to 2 “Resonator” monsters from your hand and/or Deck, except “Crimson Resonator”.
Command Resonator
Spell Quick-Play
You can only activate 1 card with this card’s name per turn.
(1) Discard 1 “Resonator” monster; add 1 Level 4 or lower Fiend monster from your Deck to your hand.
Scar-Red Rain / Red Rain
Trap Normal
You can only use this card name’s (2) effect once per turn.
(1) If you control a Level 8 or higher Synchro Monster: Banish as many monsters on the field as possible, except the monster(s) with the highest Level, and if you do, face-up monster(s) on the field that were not banished by this effect are unaffected by card effects this turn, except their own.
(2) If a DARK Dragon Synchro Monster is Synchro Summoned to your field while this card is in your GY: You can add this card to your hand.
Lantern Shark
Water Fish / Effect
LV4 1500/900
You can only use this card name’s (1) effect once per turn.
(1) If this card is Normal or Special Summoned: You can Special Summon 1 Level 3, 4, or 5 WATER monster from your hand in Defense Position, except “Lantern Shark”, also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Xyz Monsters.
(2) This card can be treated as a Level 3 or 5 monster when used for the Xyz Summon of as WATER monster.
Cutter Shark
Water Fish / Effect
LV4 1600/500
You can only use this card name’s (1) effect once per turn.
(1) You can target 1 WATER monster you control that has a Level; Special Summon 1 Fish monster with the same Level but a different name from your Deck, but for the rest of this turn, it cannot activate its effects, also you can not Special Summon monsters from the Extra Deck, except Xyz Monsters.
(2) This card can be treated as a Level 3 or 5 monster when used for the Xyz Summon of a WATER monster.
Valiant Shark Lancer
Water Beast-Warrior / Xyz / Effect
RK5 2500/1600
2 Level 5 monsters
You can only use this card name’s (1) and (2) effects once per turn each.
(1) You can target 1 monster your opponent controls; detach 1 material from a monster you control, and if you do, destroy that target. This is a Quick Effect if you control another WATER Xyz Monster.
(2) If another WATER Xyz Monster(s) you control is destroyed by battle or card effect while this monster is in the Monster Zone: You can choose 1 Spell from your Deck and place it on top of your Deck.
Air Torpedo
Spell Normal
You can only use either this card name’s (1) or (2) effect per turn, and only once that turn.
(1) Target 1 WATER Xyz Monster you control; detach 1 material from it, and if you do inflict damage to your opponent equal to the number of cards in your hand x 400, and if you do that, the monster gains ATK equal to the amount of damage this effect dealt.
(2) You can banish this card and 1 WATER Xyz Monster from your GY; draw 2 cards.
Xyz Revive Splash
Trap Normal
You can only use either this card name’s (1) or (2) effect per turn, and only once that turn.
(1) Target 1 Rank 4 or lower Xyz Monster in your GY; Special Summon it, and if you do its Attribute becomes WATER.
(2) You can banish this card from your GY, then target 1 WATER Xyz Monster you control; Special Summon 1 WATER Xyz Monster that is 1 Rank higher from your Extra Deck, by using that target you control as the Xyz Material. (This is treated as an Xyz Summon, also transfer the materials to the Summoned monster.)