
Mertis
A mysterious witch with a somewhat free-spirited and eccentric personality. She is a member of Vespanola and the sole unofficial member of a special order of knights under Queen Esperanza.
- Weapon
- Perpetual Cube
- Voice actor
- Kim Ji Min

A mysterious witch with a somewhat free-spirited and eccentric personality. She is a member of Vespanola and the sole unofficial member of a special order of knights under Queen Esperanza.
A lightning-element magic attack stance where Mertis uses a cube only she can control to cast ancient spells.
Attacks the enemy with a floating orb, dealing basic attack damage along with additional lightning damage of X.
Scatters cube fragments and causes them to explode, dealing basic attack damage along with additional lightning damage of X to surrounding enemies, and with a certain probability, stuns the enemy for X seconds on skill hit.
Uses a cube to create a powerful magical explosion in the enemy's line, dealing basic attack damage along with additional lightning damage of X, and reducing the enemy's movement speed by X for X seconds.
Releases Merthis's magical power forward, dealing basic attack damage along with additional lightning damage of X, and with a certain probability, knocks back the enemy on skill hit.

Perpetual Cube
Psionic Ice CubeWhat they say when you try to persuade them to join; it ends in success or failure.
“Oh, I see… Anyway, now that we’re one family, I ask for your help…!”
“That's too bad. If you change your mind later, please let me know. I'll be back to see you.”
“Ugh… What nonsense… Anyway, since our relationship has continued, please take good care of me!”
“I'm sorry you feel that way. But I'm sure you'll change your mind someday. When that happens, I'll be sure to come back!”
“Yeah, do as you please, kid. You're so stubborn, I don't think you'll listen even if I try to stop you.”
“That won't happen! I'm incredibly strong! You better be careful not to do anything stupid! I'll be following you relentlessly and keeping an eye on you!”
“Stop your nonsense and go back, kid. I don't have enough free time to play with you.”
“If you don't go back when I say nice things to you, I won't stay still either... Hehe.”
“Haha... Okay. This looks like it'll be fun. At least it won't be boring.”
“No. Sorry, but you misjudged me. I'm a very, very bad person... Hehe.”
“What? Really? No way... This is weird! I'll have to come back later and take a closer look...”