I don't normally look like a cloud, but after I wrote out this dialogue, I realized you should get something to look at. Visual medium and all. 
Appearing in 1st story
Featured Characters:
- Gwenpool (Gwendolyn Poole)
- Other Gwenpools from different eras
Supporting Characters:
Antagonists:
Other Characters:
- Jeff (Land Shark)
- America Chavez (Main story and flashback)
- Black Panther (T'Challa)
- Black Cat (Felcia Hardy)
- Rocket Raccoon (Main story and flashback)
- Groot (Only in flashback)
- Spider-Man (Miles Morales)
- Miss Marvel (Kamla Khan) (Main story and flashback)
- Thor (Odinson)
- Moon Girl (Lunella Lafayette)
- Devil Dinosaur
- Hawkeye (Kate Bishop)
- She-Hulk (Jennifer Walters)
- Christopher Hastings (Vision or hallucination)
- Beta Ray Bill (Vision or hallucination)
- Thor (Jane Foster) (Vision or hallucination)
- "Gwen Prime" from Deadpool's Secret Secret Wars #2's Cover
- Chris Claremont (Mentioned)
- Deadpool (Wade Wilson) (Mentioned)
- Ted Poole (Mentioned)
- Martha Poole (Mentioned)
- Bruce Wayne (Mentioned)
- Clark Kent (Mentioned)
- Spider-Man (Peter Parker) (Mentioned)
- Mr. Fantastic (Reed Richards) (Mentioned)
Races and Species:
- Humans
- Mutants
- Asgardians
- Land Sharks
- Devil Beasts
- Kryptonians (Mentioned) (Topical Reference)
Locations:
- Prime Marvel Universe (Main story and flashback)
- Earth (Main story and flashback)
- Gwenpool's Island
- Earth (Main story and flashback)
Items:
- Mjolnir
- Gwenpool's Suit
- Spider-Man's Suit
Synopsis for 1st story
- Synopsis not yet written
Solicit Synopsis
Whosoever holds this hammer, if she be awesome, shall possess the power of GWENPOOL! That’s right—Gwen’s got her mitts on Mjolnir and she’s got a list of heads that need hammering! Her mission to make herself known in the Marvel Universe at all costs gallops past all reason!
Notes
- Christopher Hastings only wrote the second page of this comic.