These trailers are pretty bad. That music is horrid but the animation seems OK. I have a feeling things like this are used to try to get the general public slightly more behind these two characters in hopes that their increased popularity results in interest in future movies and/or tv shows. That thought aside, Punisher seems like an odd choice for a supposed Avengers title.
After interfering with a top secret mission, The Punisher is taken into custody by S.H.I.E.L.D. agent and Avenger Black Widow. At the orders of Director Nick Fury, Punisher and Black Widow are sent on a mission to stop Leviathan, a global terrorist organization that plans to sell stolen S.H.I.E.L.D. technology to the highest bidder. Now, the vigilante and spy must work together to prevent this technology from falling into the wrong hands. The fate of the world, and of the Avengers, hangs in the balance.
Black Widow is voiced by Jennifer Carpenter (Dexter’s Debra Morgan) and Punisher is voiced by Brian Bloom (voice of the Punisher on The Avengers: Earth’s Mightiest Heroes). Avengers Confidential will be released on DVD and Blu-ray on March 25th.