Starscream and Hot Rod are lookin' a little feminine, there.
Meanwhile, Blurr's looking less inspired by his 1980s G1 design and more his IDW G1 design (his head, especially).
As for the bios...
Bumblebee is sure taking his amnesia well. He seems all too chipper and optimistic about getting his memories back, and has some inkling about some kind of "epic powers" he might possess and unlock.
Optimus Prime is Optimus Prime. That is all.
Windblade seems to draw most from her RID 2015 personality, being described as "super cool", able to take on the Seekers by herself, and full of determination.
Whoa, Grimlock's a whole new take, entirely! While being all typically strong and smashy in T-Rex mode, robot mode for him is a whole different case. He's described as "one of the smartest, smoothest talking bots around", and Bee considers him a very reliable pal who "always looks out for his friends". I could kinda dig a "cool guy" Grimlock.
Wheeljack's pretty much just his traditional inventor self.
Ratchet's kind of a popular dude in this version. He's so good at being a doctor that "every bot in the galaxy wants him as their medical officer." No signs of his traditional grumpiness either.
Hot Rod's now all about danger and showing off. Always up for a race, but a bit of a sore loser if he doesn't win. But he's also one of Bee's favorite people.
Prowl's a stick-in-the-mud who's all into rules and regulations and needs Bee to teach him how to have fun. Whatever.
Blurr is fast and talks fast. And Bee had to take a deep breath when imitating his way of speaking. Because robots breathe, I guess.
Megatron is a no good evil bad guy who used to be friends with Optimus.
Thundercracker is Animated Thundercracker. Vainglorious and all muscle.
This version of Starscream is a little Swindle-ish this time. He'd sell each of his teammates out if given the opportunity, but for power instead of profit.
Shadow Striker is mean and spitefully insulting to everyone and wants to destroy for Earth for some reason.
Shockwave continues the tradition established by Dreamwave of his being a scientist, but now with the creep factor upped a bit.
Slipstream's got some good qualities to her, being a capable strategist and showing leadership potential. Nothing's said if she has any actual leadership ambitions, though. Her only mentioned intent is, like Shadow Striker, to destroy planet Earth.
Soundwave's a master spy who listens in on the Autobots by "messing with [their] electrical impulses, or something along this evil lines."
Acid Storm's bio claims that Starscream is the Seeker leader in contrast to the previous news we were told about Slipstream being their leader. As for Acid Storm himself, he can control the weather to produce "toxic rain" and is kind of a stalker to Bee and his friends, always chasing them around.