(While watching the Aku scene)
“Hehehe, still feels like the same old Samurai Jack we grew up watching. And here I thought they were going to make this show dark and more violent. Hehehe.”
(Jack contemplating on ending his own life)
(Bloody fight with a wolf against alien tiger creatures)
(This scene that the gif is showing)

“Holy shit was I wrong!”

I love how you can see that Jack is genuinely shocked that he just killed another human as for over the past 50 years he's only killed robots or androids.