now that Velkoz confirmed + the battle cast model was shown, i think that Velkoz is in the very front of the picture, and the thing in the back is not Vel. just an idea heres the link to the model video: www.reignofgaming.net/news/273…
The first in the "robo"-lane is Cho'gath, next (under cho'gath head) Nocturne, than Urgot, than that thing with these three "spikes" coming from its head is Kog´Maw and finally at the end that really blurry thing in the back is Vel´Koz.
Sorry but you the one under Cho isn't Noc, that's Skarner if anyone. One of the reds specifically told people that Noc and Kha are not part of the Battle Cast crew, they're completely different skins, otherwise it would be Battle Cast Kha and Noc not Mecha Kha and Eternum Noc. :/ Sorry to burst your bubble.
It's also a very early teaser of Vel. Same thing with how Jinx's tattoo was on the wrong arm in her teaser with pool party skins. Things change, but its fairly obvious that the one eye, three tentacle thing in the back is Vel