Gwen Stacy
Due to the popularity of Spider-Gwen, in June 2015 Marvel published variant covers for 20 of their current series, which saw Gwen Stacy re-imagined as other Marvel characters, such as Doctor Strange, Groot and Wolverine. One of those variants, for "Deadpool's Secret Secret Wars #2", featured an amalgam of the design of Gwen Stacy and Wade Wilson dubbed "Gwenpool", which turned out to be especially popular with the fans. As the result, Marvel produced two stories featuring Gwenpool as a character, a backup story in the series "Howard the Duck", and a one-shot "Gwenpool Holiday Special #1", with "Howard the Duck" #1 establishing that her name is actually "Gwen Poole", not Gwen Stacy, or even an alternate version of either Gwen Stacy or Wade Wilson. Following the publication of the one-shot, an ongoing series titled "The Unbelievable Gwenpool" by the same creative team was announced, starting in April 2016.