Do the main characters of Once Upon A Time appear in Once Upon A Time in A Wonderland?

Yes, some main characters from "Once Upon a Time" make appearances in "Once Upon a Time in Wonderland." The series features characters like the Knave of Hearts and the Red Queen, who are connected to the larger narrative of the original series. However, the focus is primarily on new characters such as Alice and the Mad Hatter, with the story set in a different realm. The crossover elements are limited, creating a distinct yet familiar fairy tale world.