So far I have collected:
G1 Optimus, Peterbilt Optimus, G1 Ratchet, G1 Mirage, Windblade, Movie Bumblebee, Movie Ironhide, Movie Barricade, Movie Grinder, Movie Bonecrusher, G1 Sideswipe and Bludgeon.
Optimus is great, but I'm biased as I'm a sucker for Prime. He's my go to bot to complete the story stuff. The G1 and peterbilt have different classes and while their moves are similar their strengths are in different areas of attack.
Ratchet is funny as his special move uses his wrench.
Mirage is ok but I find him to be one of the weaker characters (and I have a 3 star one who still isn't as useful as 1 star G1 Optimus). His special move despite looking cool doesn't have as much punch as other characters.
Windblade is awesome with her moves and animation and quite strong as well.
Bumblebee and Ironhide are ok. Bumblebee doesn't become impressive until you get his second tier special move but he is very reminiscent of the movie with his kicks, etc.
Sideswipe is ok too but I find him somewhat weak. I forged him away because he just wasn't strong enough for my team and haven't had a replacement come out yet.
Barricade is cool but his vehicle move is lame as he just shoots a laser blast. Many of the characters use their wheeled forms to knock the opponent over.
Grinder is ok but a little weak and suffers from the same vehicle mode problem as Barricade only he's a helicopter shooting a missle.
Bonecrusher surprised me as his moves are awesome and his special moves can be particularly lethal as he makes the opponent continue to "bleed" after a hit. He's surprisingly also one of the stronger bots.
I only just got a 1 star Bludgeon so I don't know how good he will be but between his blades and tank modewhen I've battled against him he seems to be a pretty cool character as well.
G1 Arcee, like Grimlock, Prowl, Starscream, Movie Megatron and a variety of Sharticons aren't playable yet but do come up as opponents you have to battle. Soundwave and the Quintessons show up but they have only been in the story - not in game play.
Megatron is very hard (he's the end of story 1 big bad) and I haven't got to him yet as my team isn't strong enough to take him on.
Grimlock has awesome special moves and if he unleashes his 3rd tier move you're toast... literally.![]()
My favourite characters are Optimus - both of them, Windblade and Bonecrusher. I just love their game play and when G1 Optimus knocks out his opponent in truck mode his transformation back to bot is awesome.