Namekujikinoko

Namekujikinoko appeared in 1973 TV series called Kamen Rider. Namekujikinoko (ナメクジキノコ Namekujikinoko) is a slug/toadstool monster of Gel-Shocker. He was destroyed by Kamen Rider 1 and Kamen Rider 2's Rider Double Kick.

Arsenals
He can squeeze into any space and possess humans.