Gouki Wolfgang
Level 3 EARTH warrior
ATK 900 DEF 0
If a monster equipped with this card would be destroyed by battle or card effect, destroy this card instead. You can only use each of the following effects of "Gouki Wolfgang" once per turn. If this card is in your hand or GY and there is no face-up "Gouki Wolfgang" in your spell/trap zone (Quick effect): You can target 1 "Gouki" monster you control; equip this card to it, but you cannot use this effect of "Gouki Wolfgang" again on the next turn. If this card is sent from the field to the GY: You can add 1 "Gouki" card from your deck to your hand, except "Gouki Wolfgang". 

Gouki King Tiger
Level 7 EARTH warrior
ATK 2500 DEF 0
You can special summon this card (from your hand) by paying 700 LP. You can only special summon "Gouki King Tiger" once per turn this way. When summoned this way: Target 1 "Gouki" card you control; destroy it. If this card is sent from the field to the GY: You can add 1 "Gouki" card from your deck to your hand, except "Gouki King Tiger". You can only use this effect of "Gouki King Tiger" once per turn. 

Gouki Mirror Ogre
Link- 2 EARTH warrior Arrows: Bottom-Right, Left
ATK 1800
2 monsters, including a "Gouki" monster
You can discard 1 card, then target 1 "Gouki" monster in your GY; special summon it in defense position. If this card is sent to the GY: You can place this card face-up in your spell/trap zone as a continuous spell with this effect, but banish it when it leaves the field.
- Your opponent cannot activate spell/trap cards in response to your monsters' attack declarations.
You can only use each effect of "Gouki Mirror Ogre" once per turn. 

Gouki Entrance
Continuous Spell
If you link summon a "Gouki" monster: You can activate this effect; that monster gains ATK equal to its link rating x300 until the end of the turn. During your main phase: You can special summon a number of "Gouki" monsters with different levels from your hand, up to the number of special summoned monsters your opponent controls +1. You can only use each effect of "Gouki Entrance" once per turn.

Gouki Grapple
Continuous Trap 
If all monsters you control are "Gouki" monsters (min. 1), you can activate this card during the turn it was set. You can target 1 "Gouki" monster card you control; destroy it, and if you do, negate the effects of 1 face-up card your opponent controls until the end of the turn. You can only use this effect of "Gouki Grapple" once per turn.