Stone D. + Bolt Escargot → Twin-headed Thunder Dragon

Stone D. + Bolt Penguin → Twin-headed Thunder Dragon

Stone D. + The Immortal of Thunder → Twin-headed Thunder Dragon

Stone D. + Electric Snake → Twin-headed Thunder Dragon

Stone D. + Mega Thunderball → Twin-headed Thunder Dragon

Stone D. + Electric Lizard → Twin-headed Thunder Dragon

Kaiser Dragon + Kaminari Attack → Twin-headed Thunder Dragon

Kaiser Dragon + Tripwire Beast → Twin-headed Thunder Dragon

Kaiser Dragon + Bolt Escargot → Twin-headed Thunder Dragon

Kaiser Dragon + Bolt Penguin → Twin-headed Thunder Dragon

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

Kaiser Dragon + Electric Snake → Twin-headed Thunder Dragon