Koumori Dragon + Kaminari Attack → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Oscillo Hero #2 → Twin-headed Thunder Dragon

Gaia the Dragon Champion + LaLa Li-oon → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Kaminarikozou → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Sanga of the Thunder → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Thunder Dragon → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Kaminari Attack → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Tripwire Beast → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Bolt Escargot → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Bolt Penguin → Twin-headed Thunder Dragon

Gaia the Dragon Champion + The Immortal of Thunder → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Electric Snake → Twin-headed Thunder Dragon