Mnemon is a void hero first introduced in upgrade v4.6 on 13th March 2026 and is unlocked at 0* with 10 Mnemon shards.
Mnemon uses the Delirium Skill Tree which, whilst active, causes random status effects to the enemies when hit by one of your shots.
You are given an additional perk Big Brain which gives you an additional +35% Battle XP (Not to be confused with Player XP), this means you will unlock perks faster and earlier throughout your run. Once Mnemon reached 6* or more, you have the chance to unlock the advanced version of this perk - Super Big Brain which gives you +55% Battle XP further increasing the speed and quantity of perks you acquire through your run.
At level 20, Mnemon unlocks recieves a +30 attack boost, and at level 50 receives a +175 health boost. With all heroes, the level 20 & level 50 boosts automatically apply to every hero.
Shards are attainable through standard hero summons, as well as being a possible drop in the Sidereal Sunday Weekly Event (maximum 1 per week)
You can also find a promo code in the Void Castle to give you a couple of Mnemon shards
REVEAL
Code: 2573