I'm really big on Bray Wyatt's gimmick, and was as excited for his debut as I've been for any Superstar in recent memory. It borrows from a lot of great sources, but Bray himself has taken all the inspirations and wove them together to form something familiar, yet original. I was worried that WWE would misuse him on the main stage after he made such an indelible mark on NXT, but I really can't complain too much.
Similar to Wyatt and his family, I was a huge fan of the Straight Edge Society, in particular their leader, CM Punk. It's my favorite incarnation of Punk to date. Creepy, self-righteous, manipulative, and a great look. The hair, beard, and dark, baggy eyes just put him over the top.
I really dig what Bo Dallas is doing in NXT, what with the obliviousness to how much he's hated and the wordplay involving his name. It's unbelieva-bo! Staying with NXT, I also like Tyler Breeze. He's a better Fandango than Fandango.
Honorable mention to Kharma. The big wrecking machine is an overused gimmick on the men's side, but for the women it's so rare that for the short time Kharma was here, she was very exciting and refreshing. I had high hopes, liked her debut, and still hold out hope that she'll get another shot.