From TMW: rEvolt
Description and Biotope
The Serqet is a rare monster, that you won't find frequently in The Mana World. Occasionally, they are set loose from their places of capture by GM's, as part of a special event. Their drops are unknown.
Who knows...maybe one day they will escape without being killed, and have time to spawn somewhere in game. Keep your eye out in the future for these monsters.