From Dissidia Wiki

Chase is a battle mechanic in Dissidia 012 during which players take turns in attacking each other.

Chase example  
Chase brv gifu.gif

Warrior of Light initiates Chase after connecting his
aerial Dayflash and performs a universal bravery attack.

Whenever a move with Chase properties connects, the player who performed this attack will have an X button prompt at the center of the screen for a brief period of time. Should the player take this prompt, the player character will initiate a Chase sequence and is then presented with three options to interact with the opponent. The opponent must defend against these options either by dodging at the right time by pressing X or using Recovery Attack.

Bravery attack is a single hit attack that will send the opponent back, with the ability to wall rush if near a wall. It has a damage multiplier of 30, generates 60 EX Force on hit and will take 19 frames to impact after inputting Circle once. The angle of this attack can be altered with the analog stick to send the opponent upwards or downwards whenever this action can be performed, but the start-up speed and wall rush potential remain the same.

The damage multiplier property depends on the character. Shantotto, Golbez, Kefka and Kuja have magic type bravery attacks and thus scale with equipment that boosts magic damage, while everyone else has a physical type bravery attack during Chase. Prishe is an exception, her damage type depends on the input of this attack. Up + Circle or Down + Circle is a magic type and only Circle is a physical type.

Since the bravery chase attack can wall rush, assist followups are possible and any action that is related to Assist or EX meters can be performed after the attack has connected. To many people, this is an unreactable move and trying to evade this can be used to trick them into sustaining an HP attack during Chase instead.

HP attack is also a single hit attack that will greatly send the opponent away from the current position with the ability to wall rush. This attack will only deal HP damage, it generates 75 EX Force and it takes 61 frames to impact. As such, waiting to react to this attack is well within the realm of possiblity but the risk of suffering a bravery attack can be very costly depending on the situation of the match.

The reward for landing an HP attack is much higher on average, given it deals inescapable damage that can end the match, deplete assist and / or ex meter as well as generate a lot of assist meter thanks to Side by Side and to a lesser extent, EXP to Assist. The damage potential is also high as a result, with wall rush enabling additional damage via wall rush damage boosts and Assist followups.

Due to the attack's lengthy windup, it is possible to use it to set up Aerith assist's Seal Evil to connect on an opponent who attempts to dodge the HP attack. This can be considered a checkmate situation in which neither outcome can be beneficial for the opponent.

Chase HP attack is the only way Gabranth can deal HP damage without EX Mode or Assist.