Samurai Jack (2001–2004)
Aku: Long ago in a distant land, I, Aku, the shape shifting master of darkness, unleashed an unspeakable evil. But a foolish samurai warrior wielding a magic sword stepped forth to oppose me. Before the final blow was struck, I tore open a portal in time, and flung him into the future where my evil is law. Now the fool seeks to return to the past and undo the future that is Aku.
Aku: Who dares to summon the Master of Masters, the Deliverer of Darkness, the Shogun of Sorrow, Aku?
Jack: No matter what form you take, Aku, you will never defeat the side of righteousness.
Head Gangster: [talking of a bomb] The gift that keeps on givin'.
Aku: Oh, put that thing away, Samurai. We all know what's going to happen. You'll swing your sword, I'll fly away, and probably say something like, "I'll be back, Samurai!" And then I'll flutter over the horizon and we probably won't see each for... about a week. And then we'll do the same thing again.
Jack: Your word play will not trick me, villain!
[he attacks Aku]
Aku: I'll be back again, Samurai - you'll see! Bwah-ha-ha-ha.
[flutters over the horizon then reappears]
Aku: See what I mean?
Aku: Yes, it is I, Samurai Jack.
[Aku rolls his eyes]
Aku: How incredibly observant you are.