Supergirl, Batman, Deadpool Join Team S.H.I.E.L.D. for Dubsmash Wars

Team S.H.I.E.L.D. has released their second entry in their Dubsmash War for Charity with Team Carter, and it's full of unexpected cameos.

Clark Gregg and Chloe Bennett reached out across publisher, studio, and network lines – to the appropriate tune of War's "Why Can't We Be Friends" – to enlist the aid of Batman, Deadpool, and Supergirl star Melissa Benoist.

You can watch the video here.

Team Carter's round 2 video saw Hayley Atwell and James D'Arcy singing along with Stan Lee. This Dubsmash War is escalating at an alarming rate, so there's no telling what round 3 has in store.

Dubsmash War for Charity is a friendly competition where fans can vote, via donation, for their favorite Dubsmash video, choosing between videos by Team Carter and Team S.H.I.E.L.D. The winner will donate the proceeds raised by voting to a charity of their choice – Stomp Out Bullying! For Team Carter and St. Jude Children's Research Hospital for Team S.H.I.E.L.D. With Round 3 still to come, the event has raised more than $55,000.

Marvel's Agents of S.H.I.E.L.D. returns to ABC on Sept. 29. Agent Carter will return during the midseason.