| FCBD 1/A | DC All In 2025 | 1st appearance of Bart Regan; 1st appearance of Bret Lawton; 1st appearance of Bruce Nelson; 1st appearance of Buck Marshall; 1st appearance of Cosmo the Phantom of Disguise; 1st appearance of Eagle-Eyed Jake; 1st appearance of Gumshoe Gus; 1st appearance of Sally Norris; 1st appearance of Slam Bradley; 1st appearance of Speed Saunders (Cyril Saunders) |
| 1 | Detective Comics | 1st appearance of Speed Saunders (Cyril Saunders); 1st appearance of Cosmo the Phantom of Disguise; 1st appearance of Bret Lawton; 1st appearance of Bruce Nelson; 1st appearance of Gumshoe Gus; 1st appearance of Bart Regan; 1st appearance of Sally Norris; 1st appearance of Eagle-Eyed Jake; 1st appearance of Buck Marshall; 1st appearance of Slam Bradley |