Brave Burst

Brave Burst is a mechanic in Brave Frontier that almost every unit has (excluding evolution/fusion units). There are three tiers to the mechanic, Brave Burst (BB) which is unlocked for units 1☆ to the Dream/Omni rarity. Secondly, there are Super Brave Bursts (SBB) which are unlocked for units 6☆ to the Dream/Omni rarity. Finally, there is the Ultimate Brave Burst (UBB) variant that is exclusive for 7☆ and Dream/Omni units.

Brave Burst
To go into more detail, staring with the standard BBs, they are the weakest of the three that has the lowest multipliers and buff values of all three types. To activate a Brave Burst, one would need to collect Battle Crystals (BC) to power up a units Brave Burst Gauge (BB Gauge). Battle Crystals are dropped when you attack units, and are dropped in a semi-random amount. There are certain skills (i.e. Leader Skills, Extra Skills, Spheres, or the effects of some Brave Bursts) that can boost how many Battle Crystals are dropped, including items which due the same (i.e. Fujin Tonic). Excluding obtaining them from attacking enemies alone, once an enemy is defeated, they have a chance to drop a treasure chest which can contain things like Zel, Karma, Heart Crystals, Battle Crystals, or even Mimics! Each Brave Burst has a specific amount of Battle Crystals needed to active it. For example, with the unit Sublime Darkness Feeva, her Brave Burst requires 27 Battle Crystals to be activated. Once the quota is met, you can swipe up at around a 55 degree angle to activate it. To give an example of what buffs you can obtain from a Brave Burst, using Feeva as our example, her BB Aether Nebula states the following, "32 combo Dark attack on all foes, hugely boosts Atk, Def, Rec for 3 turns, hugely boosts BC efficiency for 3 turns & hugely boosts BB gauge for 3 turns." After she launches the BB, these effects will be applied to all units in the party for the specified amount of turns, in this case 3. Since she used her BB, the counter is reset to zero and you have to recollect BC in order to activate it again. BB's as the other two counterparts will as well, will always match the unit's element, assuming they are attacking, and may even have more than one element to it.

Super Brave Bursts
Super Brave Bursts are upgraded Brave Bursts in which may have upgraded the values upon what was previously existent in the Brave Burst, or even remove/add new buffs. Super Brave Bursts generally require less than their Brave Burst counterparts, but are added to the total of obtaining the Brave Burst. Keeping Feeva as our example, to activate her SBB after obtaining her BB is 25 BC, totally the BC cost to be 52. Once meeting the required amount of BC, you can swipe at a 90 degree angle to activate it. As the following description of her SBB, Obsidian Sweep, "42 combo powerful Dark attack on all foes, hugely boosts BB gauge, hugely boosts Atk, Def, Rec for 3 turns, considerably boosts BC, HC drop rates for 3 turns & damage taken may slightly restores HP for 3 turns" shows, there may be differences between their BB and SBB, same will apply for her UBB later. BBs and SBBs have a level system that ranges from level 1 to 10, and can be increased by a few ways which will be discussed later, while the buffs in the description of the BBs aren't changed between levels, the multiplier of the BB Atk is. For example, with Obsidian Sweep being level at level 1, its multiplier is 480% which increases by 10% from levels 2-9 until it increases by 20% to equal 580% at level 10, the increasing multiplier increases the damage output that the Brave Burst outputs.

Ultimate Brave Bursts
Ultimate Brave Bursts are as their name suggests, the ultimate attack of a unit. These are only activated once the Overdrive Gauge bar is filled up near the bottom of the Battle UI, once filled, users can swipe directly left to active Overdrive which, for three turns, allows an unit to receive a 100% increase to their Atk, Def, and Rec for the duration and also allows them to fill up their BB Gauge to launch the UBB. To fill the OD Gauge, you can boost it by attacking normally, using a BB or SBB, inflicting damage onto a unit of the weaker element, or simply waiting till the end of your turn. UBBs are separate from BBs and SBB, as it is only one level and has a static multiplier, though it is astronomically higher than the BB or SBB ones would, along with, again, adding or removing certain parts of her previous BBs. To activate it, you need to swipe up at around a 55 degree angle to launch it. Again, using Feeva as an example, her UBB, Aura Astaroth, states, "26 combo massive Dark attack on all foes, enormously boosts Atk, Def, Rec for turns, enormously boosts Spark damage for 3 turns, enormously boosts BC, HC drop rates for 3 turns & enormously reduces damage taken for 2 turns." Her UBB has a multiplier of 1500%, a little over 900% more than her SBB. Also, you can see that the wording for the buffs has grown in how well it buffs the unit(s), and that is reflected in the data. The party's Atk, Def, and Rec are buffed by 350%, the boost to the BC/HC drop rate is 100%, Spark damage is raised by 300%, and the damage reduction is 100% (meaning that units would only take 1 damage.)

Boosting your Brave Burst Level
There are 5* ways to boost your Brave Burst level. Those are by fusing any non-fusion, bar 3 upcoming mentions, or evolution units which grant a change of a the BB being level up, a duplicate of the unit which grants a greater chance, but not guaranteed, at raising the BB level, fusing a Burst Frog which grants a guaranteed 1 level, Burst Emperor which grants a guaranteed 5 levels to your BB, or the RoboFrog which maxes your unit's BB level to the highest it can go (i.e. going from lv 1 BB to level 10 SB). It should be noted that if you evolve a unit, it's BB gauge is cut in half (I.e. Level 10 SBB 7☆ being evolved into a Dream/Omni unit will result with it being reset to a level 1 SBB).


 * The 5th way (RoboFrog) is exclusive to the European version of Brave Frontier and it is unknown if it will make its way to the other servers.