It can be spent as a resource for tag mechanics. Red health is recoverable health and recovers while the reserve character is off screen.
You can backdash and sidestep from more disadvantageous situations. Dashing and sidestep have less startup and cover more distance. Spacing is even more important in this game and whiffing even fast attacks in neutral carries a risk. Tekken Tag Tournament 2's movement is better than Tekken 7's. If an attack is i7, it hits on the 7th frame. Tekken Tag Tournament 2 uses Impact frame data notation. Mid attacks are overhead attacks that must be stand blocked. High attacks are attacks that can be ducked under. Tag 2 has the largest character roster in the Tekken series. One launcher can lead to a team losing the entire round. As a result of Rage's damage boost, Tag Assault extending combos, and wallsplats adding damage, a single combo can deplete 70-80% of a health bar. Only one character has to die for the team to lose the round. Tekken Tag Tournament 2 is a 3D fighter with fast movement and explosive damage.