By Danielle Zhu
October 09, 2015 at 10:42 PM EDT

The last time Agents of S.H.I.E.L.D. and Agent Carter met up at a Comic Con, an epic rivalry was born. 

There haven’t been any competing Dubsmashes at New York Comic Con (yet), but Clark Gregg spoke with EW’s Jonathon Dornbush about the friendly lip-syncing feud. 

The Agents of S.H.I.E.L.D. actor and his costar, Chloe Bennet, teamed up with Agent Carter‘s Hayley Atwell and James D’Arcy to start Dubsmash Wars for Charity, where fans could vote for their favorite Dubsmashing duo by donating money to the teams’ respective charities. All the final videos have been released, and the winners will be announced Friday, Oct. 16 at midnight eastern. The losers will then have to perform a Dubsmash chosen, choreographed, and costumed by the winning team, and Gregg is already imagining a Team S.H.I.E.L.D. victory. 

“If we win, I have a video in mind I think they’d be great in. They’d love it. I think they’d be really happy,” Gregg said. 

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Gregg also revealed the lengths Team Carter went to during the summer to achieve Dubsmash glory. 

“I’m told Hayley Atwell and James D’Arcy blew off a day at work – not allowed to do that on Agents of S.H.I.E.L.D. – flew at 3:30 in the morning to Atlanta, and did one of the most sadistic Dubsmashes I’ve ever seen,” Gregg said. 

Gregg and Atwell will have another chance to go head-to-head when they appear on Lip Sync Battle in 2016. The actors have already filmed it, and while Gregg can’t reveal any spoilers, he does have one tidbit: “All I can tell you about Lip Sync Battle is the gloves came off.”