Icons of Reverse Scroll, Reverse Item Strengthen Scroll, Tears of Karivdis, Rebirth Restoration Scroll, Evil Ingot and Raptor
Items of the reverse system
Source / rights
Image / usage information: Knight Online — Mgame / NTTGame.

What is a reverse item in Knight Online?

High class and unique items say 'Reverse Changeable Item' in their description, which means they can go reverse. After the change the item grade shows as 'Reverse' or 'Reverse unique item'. That's what players call REB: NTTGame's Power Up Store descriptions call the same items 'Rebirth items'. It has nothing to do with your character's rebirth levels after 83 (83/1, 83/2…), the names are just similar; that system is covered in USKO first rebirth: reaching 83/1 with Mekin.

The Reverse Scroll description only lists high class and unique items. In game there are reverse versions of high class weapons like Raptor, Iron Impact, Blade Axe, Iron Bow and Elixir Staff, their Exceptional and Hepa's versions, the Tentora, Edmont Aegis and Blessing Aegis shields, and Chitin and Krowaz armor pieces. Low and middle class gear can't go reverse.

Reverse vs normal upgrade: what's the difference?

With normal upgrades a weapon makes big jumps in three hits from +7 to +10. Reverse covers the same ground in smaller steps and keeps going: the table shows high class weapon attack by reverse level, with the matching upgrade grades.

Attack by reverse level (with the matching upgrade grade)
LevelRaptorIron ImpactBlade AxeIron Bow
+7 = Reverse +1 175 168 163 119
Reverse +2 178 171 166 121
Reverse +3 181 174 169 123
Reverse +4 184 177 172 125
+8 = Reverse +5 187 180 175 128
Reverse +10 202 195 190 138
+9 = Reverse +11 205 198 193 141
Reverse +15 217 210 205 149
Reverse +20 232 225 220 159
+10 = Reverse +21 235 228 223 161
Reverse +25 247 240 235 169
Reverse +30 262 255 250 179

On Raptor a single hit from +9 to +10 adds 30 attack; with reverse you collect the same gap over ten levels, from Reverse +11 to +21. Reverse +30 Raptor has 262 attack, 27 more than a +10 Raptor (235). On low-damage weapons like bows the gain is 2–3 attack per level. Reverse +1 to +4 sits between +7 and +8; the difference really shows after +5, and most of all once you pass the +11 and +21 marks.

How does reverse upgrading work?

  1. Put the item on the Magic Anvil in Moradon; besides normal upgrades, the anvil handles unique, reverse and accessory items.
  2. Use a Reverse Scroll to turn the item reverse.
  3. Raise the reverse level with the Reverse Item Strengthen Scroll, and add Tears of Karivdis if you want; its description says it raises the success rate of that scroll.
  4. A failed attempt has a low chance to give an Evil Ingot.

NTTGame hasn't published reverse success rates. The scroll details, the burn warning and helpers like Blessing of Logos are in How to upgrade in Knight Online: Blessed Upgrade Scroll (BUS), Trina, scrolls and burn rules, so we won't repeat them here.

How do you turn a REB item back to normal?

The Rebirth Restoration Scroll takes an item out of reverse. Its description lists these pairs: Reverse +1 → +7, Reverse +5 → +8, Reverse +11 → +9, Reverse +21 → +10. It doesn't say where the levels in between land, but the paired levels have identical stats, so what you lose is the gap between your level and the threshold below it. Per the description it doesn't work on unsealed items. On global USKO, the August 12, 2026 patch fixed some maces that couldn't revert from Reverse +5, +11 and +21.

Why do reverse items glow, and can you turn it off?

Reverse items glow by level, and the glow steps up at Reverse +5, +11 and +21. The February 2, 2025 patch on global USKO added an Option > Graphic Option > Item Glow Effect checkbox: untick it and reverse glows are off on your screen only, other players still see them. Since January 2023, +9 and +10 unique items glow like reverse items too.

FAQ

How high can reverse go?
Reverse stats are defined up to +30. NTTGame hasn't announced a separate cap; the last step of the restoration table is Reverse +21.
Is Reverse +1 or +8 stronger?
+8 is stronger. On Raptor, Reverse +1 has 175 attack (same as +7) while +8 has 187. You catch up with +8 at Reverse +5.
What does REB mean?
It's the player shorthand for reverse items; Power Up Store descriptions call them 'Rebirth items'. It isn't related to character rebirth.
What does the Reverse Scroll do?
It turns a high class or unique item into a reverse item. Raising the reverse level is the Reverse Item Strengthen Scroll's job; they're different scrolls.
How much attack is a Reverse +11 Raptor?
205, the same as a +9 Raptor. Iron Impact at Reverse +11 has 198 attack.

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