Why each experiment was a failed experiment
Snipit: His Mental Unstable Side but was recorded as the Battle Formula so no effect
Sciathain: Became rebellious and didn't follow orders (was also believed to be evil)
Meaisin: Battle Formula made legs and right arm not function properly. Lost jaw in training exercise
Lunar: Was successful but injured in training and could not walk
Sparks: Due to the electricity, he was physically unstable
Spikes: Was clumsy, clumsiness meant he couldn't control the launching of his spikes and killed 2 scientists.
Vaymal: he couldn't control his strength and his hands weighed him down, making him clumsy in battle
Haydes: Was more interested in studying humans than fighting, didn't freeze but actually escaped to live among humans.
Cough: Had nightmares that stopped him from sleeping, becoming useless in battle.
EvilKoala (EK): Can't say, it will ruin the story