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Monsters: Skill Lv Up


Level UpSkill Level Up

4.2 Skill Level Up


For newbies and returning players, how to level up the skill of a Monster efficiently always remains a question in their heads. 

The chart shows the relationship between Skill Level and Battle Rounds.


Efficient Way to Skill Level Up

Before you skill level up a monster, think as below.

monster2 (2).png

A. Exclusive Skill Level Up Materials

For monsters with Exclusive Skill Level Up Materials, it’s the easiest.

Take “Sphinx” as an example.


“Sphinx” is the Exclusive Skill Level Up Material for Heroes from Afar, Cunning Phantoms, 72 Demonic Spirits, Ancient Artifacts, Chinese Paladin Legends, Monster Strike – Heroes, Richman and Hunter×Hunter series.

All you need to do is to feed a certain amount of “Sphinx” to target monsters. 

Refer to the following formula:

2 Sphinx = Skill Lv. 7

5 Sphinx = Skill Lv. 8

9 Sphinx = Skill Lv. 9

14 Sphinx = Skill Lv.10

19 Sphinx = Skill Lv. 11

24 Sphinx = Skill Lv. 12

29 Sphinx = Skill Lv. 13

34 Sphinx = Skill Lv. 14

39 Sphinx = Skill Lv. 15

**Important: Characters of bi-weekly stages, ultimate stages, Coliseum, Joint Operation, Horror Stage, Arena, etc are NOT applicable to the formula above.**

B. Feeders & Copies the Monster Itself

For general monsters (Skill Lv. 1), ask yourself: Does it have feeders? If yes, feed them with feeders.

How to check if a monster has feeders?


Open up a character info. Click “?” to check. In Varuni’s card, you can use “Ebony Lizard Warrior” as a feeder.


Other examples:

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* not exhaustive

Feeders are a list of monsters (mainly used as material purposes) which share a common skill with a target monster. As there are plenty of feeders in the game, you may refer to the Point 3 in the following hyperlink to have more understanding about them.

Fantastic Feeders and Where to Find Them , credited to Fauxy

5 Feeders/Copies of Monster Itself (same skill) = +1 Skill Lv. (minimum)

There are three feeding methods.

i) Direct Feed:

  097i   –>     1056i

Swegde can be fed directly with a feeder named “Aqueous Slimes” which shares the same skill. You can farm the feeder in many places, one is “Queen of the Kingdom of Folkvangr” in the story mode. If you feed her with 5 at a single time, her skill level will increase by 1.

ii) Evolved Feed:

105i   –>   333i   –>   359i

Pollux is a monster that his skill only matches the evolved form of a feeder “Ghost Slime“. So, you need to max the skill level of Ghost Slime by feeding it with Shadowy Nymphs first. Then evolve the Ghost Slime into “Demon Slime“, which matches the skill of Pollux’s. Finally, you may skill level up Pollux with Demon Slime.

iii) Copies of Monster Itself

For monsters that have no feeders nor exclusive skill level up materials (e.g. Biweekly monsters & Ultimate Stage Boss), farming the monster itself will be the most economical way to skill level up that monster. 


2322 (Skill LV. 7) + 2322 2322 2322 2322 2322 = 2322 (Skill LV. 8)

However, farming will cost you a certain amount of Stamina. So, you need to make a balance in terms of resource management.

C. Baby Harpy/Harpy

For all monsters, you can feed them with baby harpies.


Baby Harpy x5 = Skill Lv.7

Baby Harpy x14 = Skill Lv.8

Baby Harpy x27 = Skill Lv.9

When the Skill Lv. reaches 7, feeding Baby Harpy is not efficient anymore, so you can stop using them in order to save up for other monsters.

***Tip***: Wait for Baby Harpy Up in Friend Point Seal. You can get at least 2 Baby Harpy for each 10 draw.

Feeding Tips:

8+2 Feeding


8+2 is a feeding technique that you use 8 monster copies + 2 baby harpy to level up your target monster (Skill Lv. 1). Depending on your luck, the skill of target monster will jump to skill lv. 7-10, the so-called “lucky jump”.

Then, you can continue to feed 5 monster copies at a single time, in case it has lucky jump again, to level max its skill. 

Advantage: Save Baby Harpy/other materials/your time if you’re lucky

Disadvantage: Stamina to farm monster copies


Harpy is a rare material and hard to get in the game. If you don’t want to spend time farming other skill level up materials, you may consider using it. However, it’s recommended to use it only when it’s truly needed.

To save the valuable Harpy, it’s better to use it when Monster’s Skill Lv is 9 or abovebecause the higher the monster skill level is, the harder to get its skill leveled up.

D. Exclusive Skill Level Up Materials


Apart from Baby Harpy and Harpy which are applicable for every monster, TOS has provided other options to help you skill level up a monster in certain series. It’s named “Exclusive Skill Level Up Materials”.


Basically, there are two types. 

  1. i) One is only for a single particular series, normally seen in crossover series.  Here is the example.


Hachune Miku and Tako Luka are the Exclusive Skill Level Up Materials released in the Hatsune Miku crossover, tailor-made for the characters of “Virtual Singer” series. When used as a Level-up Material for a Monster of “Virtual Singers”, the accumulated Battle Rounds of the target Monster increase by 600. It’s the most simple and convenient method to skill level up in substitution for other materials. Generally, feeding 24 in total and the monster’s skill level will be max.


Where to get:

  1. “Treasure Site” –> “Trade Fortress” –> “Purchase”. Purchase with Coins at a limited quota.
  2. Complete bi-weekly stages of the crossover in the Lost Relic
  3. Special stages of the crossover
  4. “Guild” –> “Black Hole”. Complete the stage using Black Keys (only limited in the crossover period).


  1. ii) Another type is for multiple particular series, which means you can use that Exclusive Skill Level Up Material for several series.


* not exhaustive


Take the one on the left “Sphinx” as an example. When used as a Level-up Material for a Monster of Heroes from Afar, Cunning Phantoms, 72 Demonic Spirits, Ancient Artifacts, Chinese Paladin Legends, Monster Strike – Heroes, Richman and Hunter×Hunter, the accumulated Battle Rounds of the target Monster increase by 600.


Where to get:

  1. Special Stage from time to time in the Lost Relic. Pay attention to our weekly event in the official website.
  2. “Guild” –> “Black Hole”. Complete the stage using 14 Black Keys.

Image from iOS (16)

E. Baby Harpy Knight & Harpy Knight

Baby Harpy Knight and Harpy Knight are rare Skill Lv. Up materials, which are hard to obtain. 1 Baby Harpy Knight equals to 5 Baby Harpies + 1 Mini Madhead; 1 Harpy Knight equals to 2 Harpies + 1 Madhead.


If you consume 1 Baby Harpy, a “Brilliant” level-up bonus (EXP x1.5) will be given; there will be a higher chance of getting “Perfect” level-up bonus.

For each Harpy Knight consumed, the target monster’s Skill Level must increase by 2 and a “Perfect” level-up bonus (EXP x2) will be given.
How to obtain:

  • Madhead Trading (Harpy Knight)
  • Special material stage (Please stay tuned for official game updates)
  • In-game event reward (Please stay tuned for official game updates)
  • Social media campaign (Please stay tuned for social media updates)


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