Thunder

Thunder monsters gain a boost from Umi and Mountain. Some of the stronger ones include Batteryman AA, Super-Electromagnetic Voltech Dragon, Sanga of the Thunder, The Creator and Zaborg the Thunder Monarch. In the TCG, Thunder-type monsters have almost no specific support (excluding the likes of Electro-Whip), but the OCG has Makiu which is support for Thunders (and Summoned Skull). Thunder Dragon is a commonly used thunder monster, for his deck-thinning abilities and for his fusion counterpart, Twin-Headed Thunder Dragon.

Thunder-type monsters are generally Light.

The strongest Thunder Monster would probably be Hamon, Lord of Striking Thunder.

Aqua, Beast, Beast-Warrior, Creator God, Cyberse, Dinosaur, Divine-Beast, Dragon, Fairy, Fiend, Fish, Illusion, Insect, Machine, Plant, Psychic, Pyro, Reptile, Rock, Sea Serpent, Spellcaster, Thunder, Warrior, Winged Beast, Wyrm, Zombie