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Final Form Series has the nine Heisei Riders (Kuuga, Agito, Ryuki, Faiz, Blade, Hibiki, Kabuto, Den-O and Kiva) transform into weapons or vehicles or animals for Decade to use and most are homages to the series itself. For example, Kuuga transforms into Kuuga Gouram, which is a version of his bike. Decade rides on him like a hoverboard instead though. Ryuki transforms into Dragredder, the contract monster for Ryuki. Faiz turns into a giant Blaster gun, Blade turns into a giant Blade Rouser (Blade's sword) aptly called Blade Blade.

The Combo Change series from OOO allows you to mix and match parts like on the show. For example, the combos are a head/torso/leg swap based on different animals and elements. OOO's main combo is TaToBa or TAka TOra BAtta, which is Hawk, Tiger, Grasshopper specifically. In the show, Eiji (the protagonist) would switch out medals on his belt and scan them, initiating changes in combos. So instead of a Hawk Head, you could use a Rhino Head (Sai) and get SaToBa combo. It's a huge mix and match swap that is really fun to mess with.

Fourze just allows you to put modules of different abilities, tools and functions on his arms and legs. Stuff like a drill leg for a drill kick, or a rocket arm for flight and punching, plus wacky stuff like a stamp for a leg or a propeller leg for underwater swimming makes Fourze the Inspector Gadget of the Kamen Rider world.