Sherlock’s account is spot on, filled with the expected dry humor and utter disregard for social norms.
The honorable Dr. Watson’s Twitter is equal parts dry wit and frustration – usually aimed at Sherlock. Occasionally however, he’ll converse with Lestrade or even fans.
Molly Hooper is still mooning over Sherlock via her Twitter feed. She’s either constantly talking to him or planning out her job working in the morgue.
Whoever created Lestrade’s twitter decided to take some liberties and make him funnier than the show’s constraints allow him to be. Twitter Lestrade is constantly throwing snarky barbs at Mycroft and Sherlock.
Sherlock’s brother is just as perfectly uptight and pessimistic as he is in the show. His best tweets are where he’s trying to rein in Sherlock or joking with Lestrade.
Twitter Moriarty is just as skin-crawlingly creepy as TV Moriarty. “Tweet tweet, darlings.” Who says that…other than a cold-blooded criminal mastermind?
Mrs. Hudson’s Twitter bio actually says, “Not your housekeeper.”
Unfortunately, “The Woman” (aka Irene Adler) does not have an account. Sgt. Donovan and Anderson both have accounts, however – but not many tweets between them.