Etherealize + Evolution

Etherealization and Evolution are the two core power-up systems that turn your favorite anime units into unstoppable carries. Understanding when and how to invest in each is the difference between hitting a progression wall and cruising through endgame content.

12 min readIntermediateUpdated 2026-04-29

Quick Tip: Etherealize your main DPS unit before evolving — the stat boost from Etherealizing makes evolution stages much easier to clear.

Table of Contents

Etherealization Mechanics

  • Etherealizing a unit permanently boosts its base stats by a percentage — the earlier you do it, the more value you get.
  • Each unit can be Etherealized multiple times, with increasing material costs per tier.
  • Etherealization materials drop from Legend difficulty stages and special event missions.
  • Focus Etherealization on your Boundless or Legendary DPS unit first — support units benefit less from the stat boost.

Evolution Stages & Requirements

  • Evolution transforms a unit into a stronger version with new abilities and increased stats.
  • Each evolution stage requires specific evolution materials farmed from corresponding story chapters.
  • Boundless rarity units have the most evolution stages (up to 5) and the highest stat ceilings.
  • Plan your evolution material farming around the unit you want to evolve — check the Units Database for specific requirements.

InfoContent Information

Written by:RobloxCalc Team
Last Updated:2026-04-29
Verified for:Universal Tower Defense X Update 2.5

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