Batgirl/Prime

Batgirl is a flexible fighter who can fit into many teams, with her passive granting one bar of power to all members of her team at the beginning of the fight for great early pressure.

She can be unlocked through Challenge Mode. Otherwise, she can be randomly obtained in the Challenge Booster Pack and in the newly-added Apokolips Darkseid Challenge Pack or as a guaranteed character from the Femme Fatale Pack, but neither will unlock her for direct promotions.

Strategy
Her heavy combo's finishing animation can be partially cancelled by using a light combo immediately after, but due to the former's staggering effect, the first hit of the second combo will usually miss unless her opponent is backed against a wall. It isn't a true chaining combo as it is possible to block between the two combos.

If her Art of Deception special causes John Stewart/Green Lantern's Emergency barrier, the opponent will remain in the visual stun state until the invulnerability wears off.

Batgirl's popularity suffered over time, and not only because her base stats are becoming low in comparison: Batman/Arkham Origins was changed to only start with a maximum of 2 bars when she used to be often paired with him to give him 3 bars of power at the very start of the fight and use a Super Move immediately. Ra's Al Ghul's Scimitar also provides the wielder with one bar of starting power along with a very useful power drain effect on combo enders, although it is possible to combine both to allow any character to start with two bars of power.

She's been seeing a bit more use recently, due to the yet another repeat Batgirl challenge in August 2015, the addition of the Femme Fatale Pack that rivals, and later surpasses, the Red Son Pack in practicality (partially due to the latter being changed to a random pack), as well as Cloak of Destiny vastly increasing the damage of her special 1 (although Batgirl/Cassandra Cain is more powerful for that purpose, albeit much harder to get) as it starts with a stun. Batman/Arkham Knight is also a good match for her as he is an upgrade to Arkham Origins Batman whose 2 bars are not capped, allowing him to get 3 bars at the very beginning of a match, and he is a poor match for Ra's Al Ghul's Scimitar.

The cloak is also often paired with s1 crit gear, such as her own Nanocarbon Mask, which would further increase her crit damage to a maximum of 250% of normal damage, prior to augments.

Redemption suffers from a glitch that may cause the one or both batarangs to be thrown despite not tapping yet on the tap to throw section, causing them to only deal minimum damage. This also affects Deathstroke's Sword Spin and Superman/Godfall's Frozen Delivery. If both batarangs are thrown before tapping, it is possible for them to stun if you have stun on s2 gear, but the stun would immediately wear off when the special properly finishes.

Abilities
Here are Batgirl's abilities.

Support Cards and Gear
Here are Batgirl's support cards and gear.

Trivia

 * Her artifacts are: Utility Belt, Blades, Cowl, Cape, and Grappling Gun.
 * She was the very first challenge character.
 * Furthermore, she was also the first challenge character to be repeated twice, followed by Darkseid/Prime, Superman/Godfall, and Harley Quinn/Suicide Squad.
 * The 2.6 update added a "Stunned" text to the beginning of her SP1, although it already worked as a stun for the purpose of Cloak of Destiny prior to that.