Traits

Traits, rerolls, and stat letters

All 12 listed trait rates and effects, which early souls are worth keeping, and how that table relates to the August 2024 odds screen.

Traits, rerolls, and stat letters

All 12 listed trait rates and effects, which early souls are worth keeping, and how that table relates to the August 2024 odds screen.

Traits are the upgrade the current listing still names. A reroll replaces the trait on a tower. The menu sits up the stairs from evolution; an August 2, 2024 tour of this place opened it that way and rolled Royal Guard Soul at the 15% the table still lists.

The 12 listed traits

This table is the community trait page that lines up with that 15% roll. A November 29, 2024 update video said Perseverance had just been buffed from +15% range and +15% damage to +20% and +20%, which is what the table shows. No October 2026 odds screen was available. If your menu disagrees, trust the menu and type that percent into the trait calculator.

Trait Chance Effect
Monster Soul 30% (1/3) -5% upgrade cost
Ghost Soul 25% (1/4) -10% upgrade cost
Dog Soul 20% (1/5) +5% range
Royal Guard Soul 15% (1/6) -5% seconds per attack
Boss Soul 5% (1/20) +10% damage, -10% deployment cost
Patience 3% (1/33) +25% damage, +10% seconds per attack
Justice 2% (1/50) +27.5% range, -2.5% damage
Bravery 1.5% (1/66) -30% seconds per attack, -5% range
Integrity 1% (1/100) -25% deployment cost, -15% upgrade cost
Perseverance 0.7% (1/143) +20% range, +20% damage
Kindness 0.5% (1/200) -25% seconds per attack, +15% range
Determination 0.1% (1/1000) +50% damage, -25% seconds per attack

Seconds per attack is the cooldown between hits. A lower number attacks faster. Patience is the listed trait that raises damage and also slows the attack.

What to roll early

The August 2, 2024 tour told new players not to stop on Monster Soul. The four common combat souls above Boss Soul were the practical early targets, because a starter stack of rerolls is unlikely to hit the seven rarer names. Boss Soul was later called a usable mid-tier soul on a Papyrus gauntlet clear. Integrity was used on an expensive unit when the goal was to afford upgrades. Determination is the rarest listed damage trait. Save a large stack for a unit you will still field after the next region, not for a starter you are about to replace.

The calculator's 0.1 default is Determination, so you can see how many rerolls a 1-in-1000 trait asks for. Change the percent before you treat the result as your trait.

Where rerolls came from

The community trait page lists four sources: the Gauntlet shop in the lobby, a drop from Infinity, the AFK Chamber, and the daily Login Bonus.

An August 10, 2024 Gauntlet shop tour priced stock in Toby tokens: soul fragments 1, trait rerolls 2, perfect souls 3. Those prices were not rechecked in 2026. Do not assume Toby tokens and the Raid tokens named in October 2026 are the same currency.

Stat letters are a second system

Traits are not the letter grades. The August 2, 2024 tour explained unit stat rolls separately. B was the average letter, A was better, C was worse, and S, SS, and SSS were the high end. A unit's determination percentage, raised by getting kills, shifted those odds upward. At 0% the low letters were common. At 100% the tour showed the low end mostly gone. That percentage is not the Determination trait.

Letter odds were not republished with the October 2026 listing. Open the unit's stat screen before you spend perfect souls on a letter chase.

Full rows live on the trait list.

FAQ

Frequently Asked 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.