Jellyfish Kikkaijin (クラゲ奇械人 Kurage Kikkaijin?, 6): A jellyfish monster. He possesses an elementary school teacher and then kidnaps all students there to be reconstructed into new Kikaijin. He sprays a white paralyzing fluid from his mouth, stretch a grabbing tentacle from his arm, and disappear or move through cramped slits by turning into white slime. His normal face is actually a second head used to cushion attacks. His second head is knocked off by Stronger's Stronger Electro Kick before the rest of him is destroyed by Stronger's Electro Stream.