First, the magic output was abnormally high. Although fire magic is known for its high attack, T.N.T's fire attack clearly exceeded the normal range—a regular Fireball Technique hit so hard that Heavenly Dao had to use protective skills to withstand it!
And T.N.T was just a Bard by class, his fire attacks were supposed to not exceed those of a genuine Fire Mage, but not only did he surpass them, he left the average Fire Mage far behind. Even Dong Huan, who is considered the world's number one Fire Mage, probably couldn't do better.
The second strange thing was his exceptionally high defense. He wore leather armor, which only afforded average defensive power, but when Heavenly Dao's super skills hit him, the damage inflicted was very minimal, as if he was a top-level Knight Class like the Thunder God.
T.N.T had both high defense and high attack, along with a considerable amount of Health Points, making him a perfect class.