I Am Doppelganger Dega Adi Buana

A man was hit by a truck when he was trying to cross the road. When he woke up he saw the goddess of death and the goddess gave him the power to be able to turn into anything.
Goblin? Elf? Dragon?
Even a legend like King Arthur? Si Pitung?
He can turn into everything!
With his new form, he started a new life in a new world.
[System Activated]
A strange sound was heard, a strange voice, the sound was driving him to a new world!
What will he do?