I'm really disappointed in you /co/, I get home and what do I find? The most generic of details of the panel possible that probably came from Twitter. One of you really couldn't have gone to leak shit? Instead I'll just have to do it despite me being lazy as fuck, because I love ya guys.
In regards to Swamp Thing, teaser was a shit load of quick cuts, nothing especially cohesive to see or even really register. Lots of focus on what I'd assume are the villains, creepy serial-killer types, I'm 95% positive one wore a pig mask and may have subsequently been Professor Pyg. Most shots of Swamp Thing are just like his arm or they were front shots, but they just showed his chest. From the glimpses, he mostly looked like a huge, fairly buff, blue, veiny, moist corpse. Yes, blue, and except for like tree branches (which were CGI, it looked like the body was mostly practical) that were growing out from him, there wasn't much in the sign of plantlife on him. It should be noted that these scenes all looked like they took place in a morgue; so it could be he died, body got recovered, and then the branches growing are the start of him transforming into what we'd more likely recognize as Swamp Thing. They said they weren't going to put the teaser online and it was only for the convention, but the way it was edited implies otherwise.
I'll post more about the Doom Patrol scene and the Young Justice episode in a bit; I need to eat.