Andy Weir's new webcomic

Cheshire Crossing is the name and (part of) the setting of Andy Weir's (of Casey & Andy fame) new webcomic. Read it!

Spoiler warning!

In the year 1904, the young girl Alice Liddell is found by her father lying unconcious on the grass after having been missing for 6 days. He carries her home while a disembodied face smilingly watches.
6 years later, she and a girl named Wendy Darling are brought to Cheshire Crossing, supposedly an institute for people suffering from dissociative psychosis ("crazy by means of creating an imaginative world," in the words of Alice). Later, they also meet a Dorothy Gale. These three are introduced to Dr Ernest Rutherford, by their new nanny and tutor - Mary Poppins. He reveals to the girls that he knows that they are not crazy - and that they really travel into other worlds...

From this short overview, it should be obvious that Andy Weir "shamelessly stole" several known characters to tell a new story. In order of appearance:
Alice Liddell - The character from Alice in Wonderland. She has black hair and is constantly angry. She can step through mirrors to Wonderland, which she describes "too terrible not to be [real]". She wants to escape the institute, and is not afraid to steal for this end.
"The Psychic Aide:" He has been given no name yet, but he has demonstrated some kind of foreknowledge. I don't know whether I should know him.
Dr Ernest Rutherford: Wikipedia knows him best.
Wendy Darling: The character from Peter Pan. She has blond hair, and she has a sword and knives. To reach Neverland, she heads towards the second star to the right, and she "can ####ing fly!"
Mary Poppins: She's perfect. She is to be the tutor and nanny for Alice, Wendy, and Dorothy.
Dorothy Gale: The character from Wizard of Oz. She is brunette and has ruby slippers. With these, she (and as it turns out, others as well) can reach Oz. Due to the circumstances, she doesn't get much screen time in the first issue.