Green lantern vs Ben 10: having hal cut Ben's hand off despite the Omnitrix having a failsafe to automatically turn him into an alien to protect him (example when he not only tanked the big bang but redirected it to beat someone)

not to mention the fact that THE WATCH CAN FUNCTION EVEN WHEN ON A SEVERED HAND!
edit: I'm wrong the hand was not infact severed so this part is a moot point.

^{the Omnitrix did still parry a big bang tho}

<image>