Most Wanted Pack

The Most Wanted Pack can be bought with 600,000 Power Credits and contains 3 random gold characters out of Batman/Arkham Origins, Doomsday/Containment, Harley Quinn/Animated, The Joker/The Killing Joke, Martian Manhunter, Raven/Prime, Scorpion/Mortal Kombat, Shazam, and Superman/Regime. It is possible to obtain multiples of a single character from this pack.

The Most Wanted Pack was infamous for containing the much reviled The Flash/Elseworld as well as Solomon Grundy/Boss, but it appears they have been replaced, along with Superman/Prime and Deathstroke/Red Son.

While the possible contents of the pack are known to change, they are best known to be a faster way to obtain The Joker/The Killing Joke who has to be otherwise bought by alliance credits, which takes a very long time to obtain through daily log in bonuses (and was the only way for android players to obtain him before the alliance credit update on android), and is a relatively reliable way to get Shazam, who is otherwise a very rare drop from Gold Booster Packs. The very powerful Raven/Prime is also fairly common from this pack, compared to Challenge Booster Packs.

However, it is suspected that an update greatly reduced Shazam's drop rate from this pack; at release the drop rate was estimated at 1/6 and some players had packs with three Shazams, yet he seems considerably rarer currently.

Trivia

 * Harley Quinn/Animated and Scorpion/Mortal Kombat are the only possible characters who are worth less than 200,000 credits, 1/3 of the pack.