Ninjago, Season 1

[A flashback shows a younger Garmadon trying to steal the Golden Weapons. Wu, also younger, catches him in the act]

Wu:
I'm afraid those are for display only.

[Garmadon slowly turns around to Wu. His skin is pale and he has red eyes, having succumbed the Great Devourer's venom]

Garmadon:
Hmm... tell me, what good is a weapon if all it's used for collecting dust?

Wu:
Don't be a fool! Father warned that their power's beyond any one man—

Garmadon:
Father was the fool!

Wu:
How dare you speak so lowly of Father! We made him a promise. These weapons shall not leave this Monastery!

Garmadon:
Then I shall destroy it, and all who stand in my way!