The Kaiju from the very first Brave Series Anime, Exkaiser. They were called Geister Robos. They are created when one of the Geisters uses a bug-like device called Energy Boxes that fuse Geister energy with any object, whether it's mechanical or not.
Hashida
Tetton
Tetton(Merged Form)
Tettora
Hassha
Ikatank
Todain
Roller Coaster Robo
Ferris Wheel Robo
Mirror House Robo
Coffee Cup Robo
Octopa Robo
Star Lander
Airportron
Rifuken
Nio Komainu Robo 1 and 2
Komaou
Nanmanda
Tochons 1 and 2
Dogun
Kamotsun Form 1
Kamotsun Form 2
Hevuida
Mecha Batta
Ibarakan
Sound Walker
Carry Gator(Car Form)
Carry Gator(Robot Form)
Ganin
Time Gunner
Gondam
Ushira
Shiroda
Gondolar
Yadogon
Towerza
Densaurus
Ganseki
Ligon
Matsuri
Coinmoth
Unin
Nazca Lines Robos
Buildon
Kabuking
Kabuking(2nd Form)
Taikukan
Taikukan(Combined Form)
Vuitor
Deathka Bochan
Tosho Guns(Left to Right: Tosho Gun 2 and Tosho Gun 1)
Tosho Guns(Fused Form)
Getoron
Shuttle Lander
Gesuidon
Kelbeza
Shogakon
Muscle Clause
Kenta Clause
Pharaon
Pharaon(Powered-Up Form)
Grenda
Big Iced