"Agents of S.H.I.E.L.D." stars Chloe Bennet and Clark Gregg came out swinging (literally) in their first video for the Dubsmash Wars 2015. They chose Miley Cyrus' "Wrecking Ball" to compete against their Marvel TV rivals Hayley Atwell and James D'Arcy who styled to Beyoncé's "Single Ladies" last week.

Unlike the "Agent Carter" stars who recruited Miss Piggy for their first video, Bennet and Gregg asked their "S.H.I.E.L.D." co-stars Adrianne Palicki and Patton Oswalt to show a little skin as they all swung in on massive black wrecking balls. Both Gregg and Oswalt showed off some major leg in hopes of winning the first round.

Watch the video here.

The ABC stars kicked off their first Dubsmash Wars for Charity on Sept. 2. Fans can vote for their favorite video by donating $1 per vote. Money accumulated by votes for #TeamCarter will benefit the organization Stomp Out Bullying! while #TeamSHIELD is competing for St. Jude Children's Research Hospital.

The Dubsmash Wars started as innocent fun while the "S.H.I.E.L.D." and "Carter" casts promoted their shows at San Diego Comic-Con in July. It quickly became a rivalry to create the best video and they decided to do it all for a good cause.

Round two will start on Sept. 16 when the "Agent Carter" stars drop their next video. Both shows are in production. Atwell and D'Arcy got back to work last week while the "Agents of S.H.I.E.L.D." cast is well into their third season with the show returning on Tuesday, Sept. 29 at 9 p.m. on ABC.