Blade VS Buffy Summers - S12-E10
Buffy: Amateur hour.
Blade: There's always some motherfucker trying to ice skate uphill. (00:22:04)
Blade VS Buffy Summers - S12-E10
Blade: Are you out yo damn mind? (00:21:02)
Other mistake: When Shao Kahn rips M. Bison in half, M. Bison's hand is ripped apart too... and then stays attached to his body somehow.
Nightwing VS Daredevil (DC VS Marvel) - S5-E12
Trivia: This is the first ever Death Battle episode done in live action.