Appearances
Individuals
- Batman
- Blue Beetle
- Green Arrow
- Kanjar Ro
- Clock King
- Tick
- Tock
- Plastic Man {wall art)
- Aquaman {wall art)
- Atom (wall art)
- Red Tornado (wall art)
- Starro (wall art)
- Green Lantern (wall art/mentioned)
- Poison Ivy (mentioned only)
- Superman (mentioned only)
- A previous Blue Beetle (mentioned/statue monument)
Species
- Gibble
- Kanjar Ro's unidentified species
- Various unidentified species of Kanjar Ro's thugs
Animals
- Blue Beetle Scarab (possibly)
- Unidentified space carnivore
- Unidentified flying Gibble mount (possibly)
Organizations
- Clock King's thugs
- Kanjar Ro's thugs
Vehicles
- Kanjar Ro's unidentified ship
- Unidentified Gibble ship
Locations
- Museum of Clocks
- Unidentified Gibble homeworld
Weapons
- Batarang
- Batlaser
Technology
- Blue Beetle Scarab
- Gamma Gong
- Jetpack
Miscellanea
- Batplane (model in Jamie's room)
- Kryptonite (mentioned only)
- Sidekick
Behind the scenes
- A television commercial for cat food features a cat with a cape and lightning bolt insignia on its body.
- Jamie's room features several pieces of art, either photographs or illustrations, or a combination that feature:
Batman leaping through the air with a lightning bolt behind him (exactly like the cover of The Dark Knight Returns), Batman and Green Lantern facing off against Starro, Batman riding on the head of what appears to be a Tyrannosaurus Rex (possibly an exploit from Terror on Dinosaur Island!), Batman with Plastic Man, and many others.
- A newspaper headline on Jamie's wall reveals that Batman had stopped six bank robberies in a row.