Kairyu-shin + Electric Snake → Twin-headed Thunder Dragon

Kairyu-shin + Mega Thunderball → Twin-headed Thunder Dragon

Kairyu-shin + Electric Lizard → Twin-headed Thunder Dragon

Crawling Dragon #2 + LaLa Li-oon → Twin-headed Thunder Dragon

Crawling Dragon #2 + Kaminarikozou → Twin-headed Thunder Dragon

Crawling Dragon #2 + Sanga of the Thunder → Twin-headed Thunder Dragon

Crawling Dragon #2 + Thunder Dragon → Twin-headed Thunder Dragon

Crawling Dragon #2 + Kaminari Attack → Twin-headed Thunder Dragon

Crawling Dragon #2 + Tripwire Beast → Twin-headed Thunder Dragon

Crawling Dragon #2 + Bolt Escargot → Twin-headed Thunder Dragon

Crawling Dragon #2 + Bolt Penguin → Twin-headed Thunder Dragon

Crawling Dragon #2 + The Immortal of Thunder → Twin-headed Thunder Dragon