Up, Up, and A-Slay

 is an Offense Perk that can be equipped in MultiVersus.

How to Unlock

 * For Batman: Reach Mastery Level 12.
 * For Harley Quinn: Reach Mastery Level 2.
 * For Steven Universe: Reach Mastery Level 13.
 * For other Fighters: via Perk Training.

Solo
Your team deals 5% increased damage with attacks that knockback enemies upward.

Stacked
Your team deals 10% increased damage with attacks that knockback enemies upward.

Trivia

 * This Perk was originally known as Vertical Damage Boost.
 * The updated name references Superman's iconic catchphrase: "Up, up, and away!".