Volcarona has no need for Calm Mind, as Quiver Dance does all Calm Mind does and aslso increases Speed. Heat Wave is also not as good as Flamethrower.
As for Aggron, it should have a Rock type STAB attack, such as Head Smash or Stone Edge. Take Down is inferior to Double-Edge.
Wild Charge is pathetic when compared to both of Zekrom's signature attacks, and should not be used. Zen Headbutt isn't one of the most useful moves you can put on it, poor type coverage and only 90% accuracy for an 80 power move.
You need to remove Fly on either Zekrom or Reshiram. I would actually replace both Zekrom and Reshiram due to them being Ubers. Using Ubers takes the fun out of the game I think.
Reshiram I would replace Extrasensory on.
Suicune only seems to have three moves. Or did you just forget to put Air Slash? Suicune should always have Ice Beam, Scald, Calm Mind, and Rest. The CroCune set (as it is known) is one of the most formidable sets of all time.
Absol would love Sucker Punch over Night Slash due to low Speed. You also seem to not understand what Me First actually does. Replace it with Stone Edge, as it can't actually bounce back priority. It only hits back attacking moves. In fact, Me First isn't even priority. It only works if you are the first to attack, which isn't good considering Absol has such low Speed.
Also please use the tags in the way they were meant to be used please.