Baby Dragon + Aqua Snake → Spike Seadra

Baby Dragon + 30,000-Year White Turtle → Spike Seadra

Baby Dragon + Kappa Avenger → Spike Seadra

Baby Dragon + Kanikabuto → Spike Seadra

Baby Dragon + Zarigun → Spike Seadra

Baby Dragon + Destroyer Golem → Stone D.

Baby Dragon + Barrel Rock → Stone D.

Baby Dragon + Minomushi Warrior → Stone D.

Baby Dragon + Stone Ghost → Stone D.

Baby Dragon + Kaminari Attack → Twin-headed Thunder Dragon

Baby Dragon + Tripwire Beast → Thunder Dragon

Baby Dragon + Bolt Escargot → Thunder Dragon