|This article is about a/an giant monster in Choudenshi Bioman.|
Mantis Canth (カマキリカンス Kamakirikansu, 30) is the final, ultimate Mecha-Gigan developed by Doctor Man, working alongside Monster and Zyuoh.
A mantis Mecha-Gigan with two sickles; the right becomes fused with the sword "Kamikiri", the ultimate sword devised with Monster and Shiro's assistance.
Mantis Canth is the ultimate Mecha-Gigan, developed to use a sword earned by Monster for being the fiance of a skillful sword-maker, created by both him and Shirou Gou. After gaining the sword, Monster fuses it with the Mecha-Gigan, which uses its power to easily slash Bio Robo; however Bioman use Super Maser's Weight Attack to destroy the Kamikiri Sword and then destroy the last Mecha-Gigan.
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