User blog comment:Ben101994/Anybody want to see Ben turn into all the other alien species that were seen/@comment-173.206.6.14-20121220024245/@comment-4950186-20121220173633

When Khyber had Ben in his ship he explained that Phil when he used the Nemetrix couldn't handle the feral nature of the Predators, since they're non sentient beings and he is a sapient being, its like trying to mix water and fire together; you can't do it because the fire will extinguish and the water will evaporate taking away both when in equal amounts. That's why Khyber's dog uses the Nemetrix, and why a creature like Khyber's dog couldn't use the Omnitrix as the same thing will happen only in reverse.