Superman
Vixen
Donna Troy
Wally West
The Legion
Superman
Vixen
Donna Troy
Wally West
The Legion
Assassinate Putin!
Superman, Donna Troy, Cyborg, JSA, Charlton Comics' Characters, WW (might be changing for a better), MM, Teen Titans.
Ray Palmer..........heck even Ryan Choi at this point!
AKA FlashFreak
Favorite Characters:
DC: The Flash (Jay & Wally), Starman- Jack Knight, Stargirl, & Shazam!.
MARVEL: Daredevil, Spider-Man (Peter Parker), & Doctor Strange.
Current Pulls: Not a thing!
Bart Allen
Conner Kent
Tim Drake
Cassie Sandsmark
Though Bendis briefly got them right (or as right as they’ve been since the 90s)...and now his series is canceled so......
It's probably easier to answer what characters DC actually does know what to do with in the comics, but for a short list of characters DC messes up despite repeated tries:
Superman. This is probably the biggest offense. It seems DC can't consistently get the character right, and the wrong people frequently get a hold of him.
Cyborg. He's been pretty lame ever since the New 52. Despite all of DC's halfhearted attempts at boosting the character, in the end, I don't think any of it worked out to the character's benefit.
Hawkman. I honestly didn't read his latest series, because Robert Venditti is not a writer that excites me, but DC has a long track record of mishandling this character. The same goes for the likes of Donna Troy and Power Girl, but I would say Hawkman is more egregious because he bears the weight of an entire mythology in the DCU on his back, while the other characters are mostly extra flavors to ensemble casts. and are support players in other characters' mythologies.
I will throw another bone here and say Jack Knight. Guy just go to limbo because of Stargirl.
AKA FlashFreak
Favorite Characters:
DC: The Flash (Jay & Wally), Starman- Jack Knight, Stargirl, & Shazam!.
MARVEL: Daredevil, Spider-Man (Peter Parker), & Doctor Strange.
Current Pulls: Not a thing!
Wonder Woman. Ever since Marston passed away.