Continuity mistake: After the Hadouken-spear struggle, Scorpion teleports behind Ryu and sucker-punches him in the head, which sends Ryu just a couple of steps forward. After Scorpion takes his sword, Ryu has suddenly teleported further away, requiring Scorpion to charge at him to reach him.
Starscream VS Rainbow Dash - S1-E17
Continuity mistake: Rainbow Dash catches Star Scream in a tornado and spins him around so fast in his jet form that you see one of his wings break off and fall away. He plummets to the ground and transforms into his robot form and begins to beg for his life. He suddenly has both wings again at this point.
Nightwing VS Daredevil (DC VS Marvel) - S5-E12
Daredevil: I wish I could see the look on your face.
Nightwing: Me too. (00:17:15)
Trivia: Ben and Chad have stated in the past that if they ever do a series finale, that the very last episode of Death Battle would be between the two hosts of the show, Wiz and Boomstick.