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Mettaton NEO

Reported best single-target unit for bosses.

Mettaton NEO in [🎉RELEASE🎉] Undertale Adventures X

Mettaton NEO: Reported best single-target unit for bosses. Get it by Unstated in the October 2026 table. Kept separate from Mettaton EX in those write-ups. Use it to Bring Mettaton NEO for a high-health enemy. Use Mettaton EX instead when the problem is a packed wave.

By [🎉RELEASE🎉] Undertale Adventures X WikiLast updated:

What is Mettaton NEO?

Mettaton NEO is the single-target boss killer in the October 2026 lineup, which calls it the highest single-target unit. The July 2025 ranking used the same boss-killer grade. No damage number from October 2026 was published.

Published facts

FactValue
TierS
RoleBoss damage
Reported tierS
Era notedOctober 2026 lineup

How do you get Mettaton NEO?

Unstated in the October 2026 table. Kept separate from Mettaton EX in those write-ups.

How do you use Mettaton NEO?

Bring Mettaton NEO for a high-health enemy. Use Mettaton EX instead when the problem is a packed wave.

FAQ

Mettaton NEO questions

What is Undertale Adventures X?

It is a free Roblox tower defense experience by Side Productions. You defend a base with Undertale-inspired units, level those units, and strengthen them with traits. The experience was created on July 16, 2024, and the public record was updated on October 12, 2026.

Is Undertale Adventures X free?

The Roblox listing has no paid entry price. Optional Robux gamepasses exist. Known names include VIP, SHINY Hunter!, Supporter, +50% Tokens, and 2x XP. Current Robux prices were not on the public listing text used here.

Who makes the game?

Side Productions, the verified Roblox community that owns the experience. The community page is linked from the game listing.

How do codes work?

Open the Codes button on the right side of the screen, enter the full string, and press Enter or Redeem. Only 2KCCU! and FREESTUFF! were still reported working in October 2026, and both rewards were described only as freebies.

Do trait rates still match the old table?

Trait rerolls assign one of 12 listed traits. The rate table matches an August 2024 odds screen for Royal Guard Soul at 15%, and a November 29, 2024 video described the Perseverance buff the table now shows. Read the percent in your own Traits menu before you spend a large stack of rerolls.

Related
UnitsSansReported top-band area damage and crowd control.Read guideUnitsAsrielReported area damage that lineups use on packs and bosses.Read guideUnitsUndyne the UndyingReported front-line tank that also deals damage.Read guideUnitsPapyrusSnowdin ultra rare, and a reported endgame crowd-control unit.Read guideUnitsAsgoreReported melee tank and the named Undyne substitute.Read guideUnitsMuffetReported slow for grouped enemies.Read guideGuideClear your first defenseHow a first defense works: what the October 2026 Roblox listing confirms, and which placement, money, and difficulty rules come from 2024 footage.Read guideGuideTraits, rerolls, and stat lettersAll 12 listed trait rates and effects, which early souls are worth keeping, and how that table relates to the August 2024 odds screen.Read guideGuideRaids, tokens, AFK, and passesRaids tokens, the Underpass track, the AFK Chamber, and the five named gamepasses, with 2024 shop prices kept separate from 2026 perk text.Read guideCategoryAll UnitsRead guideCodes[🎉RELEASE🎉] Undertale Adventures X CodesActive, redeem, and expired lists.Read guideVideos[🎉RELEASE🎉] Undertale Adventures X Video TutorialsWatch practical walkthroughs and progression tips.Read guideCodesHow to redeem [🎉RELEASE🎉] Undertale Adventures X codesWhere a redeem box would appear after a patch.Read guideCodesExpired [🎉RELEASE🎉] Undertale Adventures X codesRetired strings and why fake lists stay empty.Read guideTools[🎉RELEASE🎉] Undertale Adventures X toolsEditorial pickers and calculators.Read guideTools[🎉RELEASE🎉] Undertale Adventures X class pickerPublished roster topics for reference.Read guide
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See also

UnitsMettaton EXReported area damage for packed waves.Read guideUnitsTemmieHigh early damage that lineups say does not scale defensively.Read guideUnitsGreater DogSnowdin super rare used as a low-damage tank.Read guideUnitsFroggitEarly Ruins unit that later lineups say to replace.Read guideSame topic[🎉RELEASE🎉] Undertale Adventures X databasereferenceRead guideSame topic[🎉RELEASE🎉] Undertale Adventures X TraitsreferenceRead guide