Koumori Dragon + Zone Eater → Spike Seadra

Koumori Dragon + Steel Scorpion → Metal Dragon

Koumori Dragon + Ooguchi → Spike Seadra

Koumori Dragon + Swordsman from a Foreign Land → Sword Arm of Dragon

Koumori Dragon + Saber Slasher → Metal Dragon

Koumori Dragon + Yaiba Robo → Metal Dragon

Koumori Dragon + Giant Mech-soldier → Metal Dragon

Koumori Dragon + Mechanical Spider → Metal Dragon

Koumori Dragon + Bat → Metal Dragon

Koumori Dragon + Giga-tech Wolf → Metal Dragon

Koumori Dragon + Cyber Soldier → Metal Dragon

Koumori Dragon + Shovel Crusher → Metal Dragon