Mega Thunderball + Little Chimera → Tripwire Beast

Mega Thunderball + Penguin Soldier → Bolt Escargot

Mega Thunderball + Fairy Dragon → Thunder Dragon

Mega Thunderball + Obese Marmot of Nefariousness → Tripwire Beast

Mega Thunderball + Liquid Beast → Bolt Escargot

Mega Thunderball + Twin Long Rods #2 → Bolt Escargot

Mega Thunderball + Lady of Faith → The Immortal of Thunder

Mega Thunderball + Armored Starfish → Bolt Escargot

Mega Thunderball + Rock Spirit → Kaminari Attack

Mega Thunderball + Ill Witch → Kaminari Attack

Mega Thunderball + Witch's Apprentice → The Immortal of Thunder

Mega Thunderball + Armored Rat → Tripwire Beast