How could this innocent looking guy turn to the evil side?

[KyuubiAhri]

no fucking sense. And he could kill his master....

 

[Keedounan]

Spending several thousands of years watching mortals endlessly killing each other does a number on one's innocence. Doesn't excuse his complete hypocrisy about it, though.

 

[Fantastische Hure]

Zamas is Light. He only put-up an act. In reality he thought he was superior to everyone and wanted to create his own ideal world.

 

[Keedounan]

Zamas is Light. He only put-up an act. In reality he thought he was superior to everyone and wanted to create his own ideal world.

The differences being that Zamasu was an actual god...and Light was better written.

 

[Captain Cadaver]

Zamas is Light. He only put-up an act. In reality he thought he was superior to everyone and wanted to create his own ideal world.

Light had genuine good intentions and morals prior to gaining the Death Note though, as seen in the part where he revoked ownership of the Death Note.

 

[Fantastische Hure]

I haven't got that far but Light seems like a sociopath for example right before Naomi ([can't remember her last name] was about to commit suicide and she asked him about his watch he made sure he told her just before the time was up so he could see e horror on her face. He's a dick-head, even-though the Book might have corrupted him. Even as early as the beginning he was looking-down on his classmates and saying something like the world would be better-off without people like that despite them just talking about dates and stuff.

 

[Let's Go Fearless!]

Don't let that face fool you.