There are 2 monster(s) found that have the ability to use Acid Demonstration:

Monster Mob
Lv.
HP Size / Race / Element Flee 95% /
Hit 100%
Skill
Lv.
Skill
Analysis
Creator Flamel (Re-Stats) 160 4230000 Medium / Demi-Human / Fire 4 412 / 328 10 Go
Flamel (Re-Stats) 141 316468 Medium / Demi-Human / Fire 3 298 / 240 10 Go