Minosaurs (マイナソー,Mainasō) are mindless monsters that are made from the negative emotions of humans gathering together. Normally appearing on their own, the returning Druidon Tribe reveals they discovered how to create Minosaurs directly from humans, with intent on using them to wipe out mankind. Upon being infected by Kureon's slime, the victim's negative emotions instantly manifest into a Minosaur, gaining their skills and obssesions (their speech would also be derived from the victim's biggest desire), while at the same time, draining away their life energy. The more negative emotions the Minosaur absorbs from its host, the stronger it becomes, and eventually enlarges itself. To make matters worst, if the Ryusoulger fail to destroy the Minosaurs in time, the victims will eventually be killed and thus the Minosaur will gain a completed body and become virtually unstoppable. Minosaurs are based on mythical creatures.
However, the Minosaurs' drawing on the negative emotions of the chosen human for power is more in line with the Bugsters, who became more powerful based on the stress level and effect they had on their human host. Similarly, Gates would become Phantoms if they had lost their hope and reason to live.
The Minosaurs having superhuman abilities yet possess little to no human consciousness is similar the Smash from Kamen Rider Build.
The name Minosaur is a combine of the names Minotaur and Dinosaur, who changed one letter.
Alternatively, the name might be a combination of the words "Minus" And Dinosaur, minus coming from the negative emotions that create them.
Between tetriminos from Tetris franchise and minosaurs in Super Sentai with the word 'minos', the first letters 'tetri' having assembly with mino(s) as last letters and first letters 'mino' assembling last letters 'saur'.
The Minosaurs are the first Sentai monsters created from humans. This trend was frequent in Kamen Rider.
With the exception of the Dragon Minosaur, The Minosaurs draw some design elements from the Rinjuken Beast-Men of Juken Sentai Gekiranger(IE: the face of the creatire they're based on being located on their torso).