Masaki Murakami was originally one of 12 prototype bodies created for Richard Guyot. He led a rebellion against the new Zoa Lord but failed to kill him. After escaping Chronos with the help of the scientist who made him, he went around trying to destroy it. During an information gathering operation, he met Guyver 1 and together they fought Chronos. In their first encounter with Richard Guyot, Murakami was badly injured and almost died. He then had only one transformation left and decided to use it to fight Guyot one last time. After a long battle, Murakamis Zoa Crystal was shattered, and he died at the hands of Guyot. Shortly after, Alkanphel resurrected him and gave him the ZoaCrystal that was pulled from Richard Guys head, making him the new Zoalord of gravity and the second strongest Zoalord there is. He is now known as Imakarum Mirabilis. Due to receiving heavy ocular damage during his rebirth, Imakarum wears a visor. His ZoaCrystal was cracked when battling the Guyver Gigantic in Shinjuku city. Alkanphel took him to the rejuvenation pod in his temple on Silha where his ZoaCrystal was healed, but while it was healing, Imakarum witnessed what Alkanphel lived over 3 billion years ago when he killed Guyver 0 and was almost killed by the creators. Imakarum is Alkanphel's right-hand man and his primary goal is to serve him in his stead while he is unable to oversee Chronos activity due to his long regeneration cycles. He is as close to a friend as Alkanphel has and is trusted above all others, but after seeing the memories of Alkanphel, Imakarum has begun to think for himself, and his true goals are unknown.