Jin

You fight it in Magma Grotto Town, during Tyrant Mulcimer.

Its Nexomon's levels are rolled when the battle starts, from the story's difficulty plus this battle's own weight of 1, as the Battles page explains.

As a tamer battle, it has no capture option.

Winning it gives ×2 EXP and ×2 coins.

What its boss cores do:

• A boss vitality core (150): 150% more max HP.
• A boss stamina core (100): 100% more max stamina.
• A boss immunity core (50): 50 off the chance of every ailment against it.