In its original form, Hypnos-T Type resembled a genderless and hairless youth, with small stabbing claws on one hand.
In the second form, the Tyrant could run at high speeds and viciously slash its opponents. It could also perform a downward strike. Its most dangerous attack was a powerful jumping strike performed at a distance.
The creature lost much of its intelligence in the process, suffering through a form of hypertonia, and losing its humanoid shape, becoming a bestial, primate-like, hunched monster. Because of the excessive muscle growth, the Tyrant was rendered vulnerable, with the heart becoming exposed as is common in its brethren. These new weaknesses didn't make it any less agile, however. It compensated for the exposed heart by shielding it with its claws.