Last updated: July 2026
Universal Tower Defense Z Update 4.0 — Bleach Expansion
Universal Tower Defense Z Update 4.0 patch notes for July 2026. Bleach-themed raids, Moonless Sky, Reaper City, and new relic sets.
Update 4.0 Overview
Update 4.0 is the largest content drop since Universal Fest, rebranding the Roblox experience from Universal Tower Defense X to Universal Tower Defense Z (UTDZ). Released in July 2026, the Bleach-inspired expansion adds three major raid stages, six headline units, two new relic sets, and a wave of apology codes tied to the 4.0 launch.
The update shifts endgame meta toward Boundless Moonless Sky as the premier burst carry, while Reaper City Raid introduces Flame Captain and farmable Almighty and Heaven Piercer relic gear. F2P players benefit from UTDZApologyForBugs! (1,500 trait rerolls plus a Boundless Orb) and WeLoveUTDZ! (Fern, Kenpachi EVO, and etherealization shards).
New Stages and Raids
Three raid lines anchor Update 4.0 progression. Top of the Hueco Castle Raid drops Secret-rarity Ichiko—the starting point for Moonless Sky evolution. Reaper City Raid spans five Acts plus Boss Rush, rewarding Flame Captain, Almighty relic pieces, and Soul Reaper Badges for the raid shop. Beast Desert Legend Act 3 drops Drill Hero with a 7.25% rate and guaranteed pity at 30 clears.
- Top of the Hueco Castle Raid — Ichiko farm, Hollow Essence shop
- Reaper City Raid — Flame Captain, Almighty set, Peroxide 100% damage tag
- Beast Desert Legend Act 3 — Drill Hero and Starry Glasses evolution item
- Moonless Sky Universal Tear — Moonless Blade drop (10% rate)
New Units at a Glance
Update 4.0 adds Boundless Moonless Sky (Ichigo evolution line), Secret Flame Captain and Drill Hero, Mythic Cat Captain and Bloody Captain, and the Ice Queen (White Haze) Rukia evolution. Peroxide-tag units deal double damage inside Reaper City stages—slot The Almighty King, Visionary (Unrivaled), or Moonless Sky for faster clears.
- Moonless Sky (Boundless) — Evolve Ichiko from Hueco Castle Raid
- The Almighty King (Boundless) — Evolve The King from Moonless Sky Rift (25 pity)
- Symbiotic Alien (Apex) (Secret) — Crime Fighting Extraction (15% / 5 pity)
- Flame Captain (Secret) — Reaper City Raid Act 5 / Boss Rush
- Drill Hero (Secret) — Beast Desert Legend Act 3 (7.25% / pity 30)
- Trickster (Phantom) (Secret) — Summon banner — Persona crossover
- Cat Captain → Neko Captain (Mythic) — Basic/Selection Banner + Black Cat Spirit
- Bloody Captain (Mythic) — Summon banner
- Ice Queen (White Haze) (Legendary) — Evolve Rukia via Reaper City Raid Act 4
New Codes and QoL
Launch codes UTDZApologyForBugs! and WeLoveUTDZ! compensate players for 4.0 bugs. WeLoveYoruichi! (level 15) grants a free Yoruichi unit plus 250 trait rerolls—redeem before it expires. SrryForWhoopsie! grants a Ruler Ticket at level 30, while ReapersVsHollowDestroyers adds 50 trait rerolls at level 20.
Mid-July 2026 also added Crime Fighting Extraction, a Marvel crossover raid farming Symbiotic Alien (Venom) and the Hero Relic Set. Redeem every active code from our Codes hub before farming raids.
Crime Fighting Extraction Crossover
Running alongside the Bleach expansion, Crime Fighting Extraction introduces Symbiotic Alien (Venom) with a 15% drop rate, Hero Relic Set pieces, and synergy with Update 4.0 Peroxide-tag units. Farm the stage for Venom evolution materials and slot Hero relics on Marvel-themed carries.
Frequently Asked Questions
When did Update 4.0 release?
July 2026—the Bleach expansion coincides with the UTDX to UTDZ rebrand.
What is the best Update 4.0 unit?
Moonless Sky (Boundless) tops DPS meta; Flame Captain excels at sustained DoT in raids.
Is Update 4.0 F2P friendly?
Yes—UTDZApologyForBugs! and WeLoveUTDZ! grant massive free resources on login.
What relic sets were added?
Heaven Piercer (surround-buff synergy) and Almighty (non-crit damage scaling) from Reaper City Raid.
Do old Universal Fest units still matter?
Yes—Joyful Captain and Virtual Idol remain core; Moonless Sky adds a new Boundless ceiling.