Mewtwo VS Shadow the Hedgehog - S3-E6
Revealing mistake: During Shadow's Super Shadow transformation, half of the background becomes a green screen.
More mistakes in Death Battle
Nightwing VS Daredevil (DC VS Marvel) - S5-E12
Nightwing: What are you?
Daredevil: Better. (00:16:10)
Trivia: When Scorpion catches Ryu's fist, we get the first 2 hand-drawn shots in the history of the show. (00:12:00)