My past does not define me .

Vyse in his past was actually very evil
Very serious
calculated
and cruel to many , he was top rank in his village's ancient assasination techniques ( not many can master these ancient techniques actually ) he was above most assasins in the universe he needed one more mission to be elite , but was defeated by a mysterious assassin who later on turned out to be Novi.
Mondodo found vyse again after his defeat and made him into the being he is now.