My favorite would have to be Grimlock, followed by: Megatron (he is BADASS in this series), Prowl, Bumblebee, Sentinel (I actually like his attitude...), and Ultra Magnus.
It's still Prowl. I could watch an entire series about him - he has that much depth. The wonderful thing about this show, though, is that everyone stands out in their own way.
I'll give the obvious answer and say Starscream. He has been given rather good characterization in the show. I look forward to more of him. I have a test shot of the voyager toy and anxiously await the mass release.
I'm very fond of nearly all of the characters, as they're all so well done. As an admirer of Weird Al, Wreck-Gar is one of my top favourites. But still, I'd say Lugnut occupies the #1 spot for me. I just love his type of character (same reason I loved BW Inferno so much).
Well I like a lot of the characters, but I definitely gotta say Blitzving is one of my top five...or ten...I also think Starscream, Megatron, Lockdown, Ultra Magnus, Soundwave, Grimlock, Lugnut, and Prowl are all badasses as well.
Bulkhead, Blitzwing, Dinobots....but I would have to say Starscream is the best yet. hes scheming, conniving, backstabbing, just the best evolution of that character yet.
Animated is full of awesome characters, but my top favorites are probably Blitzwing, Starscream, and.. Meltdown. XD And Swindle seems promising.. He just might become my number one favorite, as he's my favorite G1 character.
I took my screen name from G1 Blitzwing, but the re-invented version of him is really starting to grow on me. I also love this version of Starscream, he has all the basic aspects of G1 Starscream, except that he actually has the balls to back up his personality. Other than Megatron, nobody has really been shown to being inside of his power level. Lugnut, Bulkhead and Prowl also get honourable mention.
Definitely Wreck-Gar with Bulkhead, Starscream, and Grimlock making close seconds. Honerable mention also goes to Blitzwing, Prowl, and Prime.
I like Blitzwing 'cause he so wacky and I like his personalities XD and Bumblebee because he is so childish character ( I luv every childish characters <3 )
Starscream. Second best 'Screamer ever, beaten only by Armada Starscream. He's just so...awesome, especially the way he just crushed Lugnut in "Megatron Rising" Pt 2. Really, he's the greatest character in Animated.