As the three characters contained in this pack cost 542,000 credits to purchase directly (600 Wonder Woman and Batgirl have to be unlocked through Challenge Mode or randomly through the purchasing of many Challenge Booster Packs), this pack will save you ~26% Power Credits.
It costs just as much as the Red Son Pack; yet, compared to it, this pack's content is a much more aggressive team, the most significant difference coming from trading away +45% maximum health in return for +50% damage, but the inclusion of Animated Harley allows them to sustain through a lot of damage.
It's the only fixed pack known to have its contents changed. Batgirl Prime was added after the pack was introduced, replacing Catwoman/Batman Returns. Challenge Booster Pack and Most Wanted Pack also had their possible contents changed, but they are random character packs.
- The term Femme Fatale refers to an attractive woman (or, in this case, women) who behave with possibly flirtatious acts, especially when said women can bring destruction to the men who get involved with them. This title fits very well with the characters' bios and relations to others in the game, especially for Harley Quinn.