Their upgrade is the Trickster.
Berserkers function well on teams requiring little LUC, or teams that require a good buffing character due to the wide variety of buffs that Berserkers learn. All of the Berserker's skill have secondary effects (albeit not all of them positive), allowing them to fit onto teams requiring status ailments or chance of one-hit kills.
|Level learned||Skill name||Team Skill|
|Level 7||Poisoned Carver||Venom Ballista|
|Level 44||Silent Killing||Killing Field|
|Level 24||Beast Soul|
|Level 15 ♂||ATK Boost|
|Level 15 ♀||DEF Boost|