Spike Seadra + Mechanical Snail → Metal Dragon

Spike Seadra + Greenkappa → Sword Arm of Dragon

Spike Seadra + Living Vase → B. Dragon Jungle King

Spike Seadra + Tentacle Plant → B. Dragon Jungle King

Spike Seadra + Morphing Jar → Stone D.

Spike Seadra + Giant Turtle Who Feeds on Flames → Kairyu-shin

Spike Seadra + Rose Spectre of Dunn → B. Dragon Jungle King

Spike Seadra + Ghoul with an Appetite → Skelgon

Spike Seadra + Violent Rain → Kairyu-shin

Spike Seadra + Penguin Soldier → Kairyu-shin

Spike Seadra + Liquid Beast → Kairyu-shin

Spike Seadra + Twin Long Rods #2 → Kairyu-shin