Kappa-bunga, dudes.
Not confirmed for release, etc.
サイコ・カッパー Psycho Kappa (Psychic Kappa)
Level 2 WATER Aqua Normal Monster
ATK 400
DEF 1000
復讐のカッパ Fukushuu no Kappa (Kappa of Revenge/TCG: Kappa Avenger)
Level 3 WATER Aqua Normal Monster
ATK 1200
DEF 900
カッパラッパー Kappa Rapper
Level 3 WATER Aqua Normal Monster
ATK 800
DEF 1300
ひょうすべ Hyousube
Level 4 WATER Aqua Normal Monster
ATK 1500
DEF 900
河童大帝リバースライダー Kappa Taitei River Slider (Kappa Emperor River Slider)
Level 7 WATER Aqua Effect Monster
ATK 2500
DEF 1500
[REQUIREMENT] You can activate this by sending 1 face-up Aqua monster on your field to the GY.
[EFFECT] Choose up to 2 Level 7 or lower face-up Normal Monsters on your opponent’s field and destroy them.
へのかっぱ Henokappa (It’s Not Kappa Rocket Science)
Normal Trap Card
[REQUIREMENT] If there is a Level 5 or higher monster on your opponent’s field, when your opponent’s monster declares can attack and attacks your face-down Defense Position, you can activate this.
[EFFECT] The attacking monster loses 2000 ATK until the end of the turn.
Note: This card’s name references Kappa but basically is the Japanese version of saying “It’s a cinch” or “It’s not rocket science”
かっぱの甲羅干し Kappa no Kouraboshi (A Kappa Tanned, Rested And Ready)
Normal Trap Card
[REQUIREMENT] When your opponent Normal or Special Summons a Level 5 or higher monster face-up, you can activate this.
[EFFECT] Choose 1 Level 4 or lower Aqua Normal Monster in your GY and Special Summon it in face-up Defense Position.
Note: Kouraboshi here is referring to simultaneously sunbathing and letting a shell air-dry)