Electric Snake + B. Dragon Jungle King → Twin-headed Thunder Dragon

Electric Snake + Serpent Night Dragon → Twin-headed Thunder Dragon

Electric Snake + Mikazukinoyaiba → Twin-headed Thunder Dragon

Electric Snake + Meteor Dragon → Twin-headed Thunder Dragon

Mega Thunderball + Skelgon → Twin-headed Thunder Dragon

Mega Thunderball + Tyhone #2 → Twin-headed Thunder Dragon

Mega Thunderball + B. Dragon Jungle King → Twin-headed Thunder Dragon

Mega Thunderball + Serpent Night Dragon → Twin-headed Thunder Dragon

Mega Thunderball + Mikazukinoyaiba → Twin-headed Thunder Dragon

Mega Thunderball + Meteor Dragon → Twin-headed Thunder Dragon

Skelgon + Electric Lizard → Twin-headed Thunder Dragon

Tyhone #2 + Electric Lizard → Twin-headed Thunder Dragon