A recurring dispute is whether a certain challenge character is available in the Challenge Booster Pack, as it usually takes a couple more updates before a recently expired challenge would have its character added to the pack. Currently, the latest challenge characters added to the pack are from patch 2.13 and before such as Green Lantern/Jessica Cruz Rebirth, Sinestro/Antimatter, Darkseid/Apokolips & Hawkgirl/Blackest Night. Later challenge characters, such as Hawkgirl/Regime are not yet available from this pack. Also, Raven/Prime and Green Lantern/Red Son appear to be missing from this pack for unknown reasons (possibly because of their popularity). The Most Wanted Pack and Red Son Pack respectively can be used to obtain them.
A discounted Gold Booster Pack is generally considered superior to the Challenge Booster Pack due to only costing half as much while giving comparable value, although most Gold Booster Pack cards can be bought directly from the store and the Challenge Booster Pack is great for completionists.
The italicized characters can only be found exclusively in this pack if you did not unlock them at their challenge, while the other characters can be found in both this pack and other packs as well (click on their names to find out how to obtain them):
Contents Currently Confirmed
- Batman/Blackest Night
- Black Adam/Kahndaq
- Green Lantern/Jessica Cruz Rebirth
- Green Lantern/John Stewart
- Green Lantern/Red Lantern Hal Jordan
- Hawkgirl/Blackest Night
- Killer Frost/Regime
- Killer Frost/Prime!
- Lobo/Bounty Hunter
- Martian Manhunter/Prime
- Martian Manhunter/Blackest Night!
- Raven/Teen Titans
- Scorpion/Mortal Kombat*
- Scorpion/Mortal Kombat X
- Solomon Grundy/Boss
- Solomon Grundy/Earth 2
- The Flash/Elseworld
- Wonder Woman/600
- Wonder Woman/New 52
*:Previously found in Most Wanted Pack and later removed.
^: A single copy was awarded during a more recent Challenge Mode; Darkseid/Prime in Martian Manhunter/Blackest Night's challenge, and Batman/Beyond Animated in Green Lantern/Red Lantern Hal Jordan's challenge.
!: New character, available in last update.
- The icon of the Challenge Booster Pack is a regular dodecahedron with its six visible faces representing Green Lantern/John Stewart (center), Batgirl/Prime, Aquaman/Regime, Batman/Blackest Night, Martian Manhunter and Scorpion/Mortal Kombat (clockwise from top), although it is not limited to these six.
- This pack was briefly removed from the store (for the 2.12 update) following the Black Friday sale. It is possible that the cancellation was to pave the way for the new Special Challenge Booster Packs.
- Before the 2.13 update, it had Deathstroke/Arkham Origins, Batman/Red Son and Deathstroke/Red Son.
- Before the 2.14 update, it had Batman/Beyond Animated.
- The Flash/Elseword is the only card that is worth less than the pack itself.