Dynamo

Dynamo is a treasure.

Source
Dynamos can be obtained as an enemy drop from the following creatures:
 * MA Veles - 30% chance or 50% chance at level 35
 * MA Veles-Bis - 60% chance
 * MA Hoplomachus - 95% chance

It can also be obtained as a collectibles throughout the world:
 * Callatein's Plunge at the treasure spot located on the pointed shore where the river splits.
 * Gralea
 * Insomnia

Quests
Dynamos are needed for the quest A Better Bioblaster to upgrade from a Bioblaster to a Bioblaster Plus.