Out of all of Out of all of Dr. Gero's Androids, 19 is by far Dr. Gero's most loyal and obedient creation. He is committed to Dr. Gero's quest for revenge against Goku and was very eager to face Goku himself. He is also apparently very intelligent as he was able to convert his creator Dr. Gero into Android 20, an energy absorption model like himself. He is quite confident in his abilities and appears to take pleasure in his opponent's suffering such as when Goku was weakened by his Heart Virus.