Aqua Dragon + The Immortal of Thunder → Twin-headed Thunder Dragon

Aqua Dragon + Electric Snake → Twin-headed Thunder Dragon

Aqua Dragon + Mega Thunderball → Twin-headed Thunder Dragon

Aqua Dragon + Electric Lizard → Twin-headed Thunder Dragon

Sea King Dragon + Kaminari Attack → Twin-headed Thunder Dragon

Sea King Dragon + Tripwire Beast → Twin-headed Thunder Dragon

Sea King Dragon + Bolt Escargot → Twin-headed Thunder Dragon

Sea King Dragon + Bolt Penguin → Twin-headed Thunder Dragon

Sea King Dragon + The Immortal of Thunder → Twin-headed Thunder Dragon

Sea King Dragon + Electric Snake → Twin-headed Thunder Dragon

Sea King Dragon + Rainbow Flower → B. Dragon Jungle King

Sea King Dragon + Barrel Lily → B. Dragon Jungle King