One of the Gouki that Go used this week is introduced in Circuit Break, and it helps support huge attacks!

CIBR-JP006 剛鬼ヘッドバット Gouki Headbat / Gouki Headbutt Bat

Level 2 EARTH Warrior-Type Effect Monster

ATK 800

DEF 0

You can only use each of this card name’s effects once per turn.

(1) If this card is in your hand: You can send 1 other “Gouki” monster from your hand to the GY, then target 1 “Gouki” monster you control; Special Summon this card in Defense Position, and if you do, that target gains 800 ATK until the end of this turn.

(2) 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 Headbutt Bat”.

Source