Mana is a naturally occurring, yellow-colored source of life energy within the Ben 10 Universe.
Mana can be manipulated and controlled by a range of species across the universe, for numerous purposes, including energy blasts, barriers, telekinesis, and shields. It can also be used to heal.
There exists a few species that manipulate a derivative of mana, called ki. Much like mana, ki can be used to create offensive energy blasts, as well as for more peaceful means, such as encouraging plant growth. In the case of the Saiyans, ki can be used to transform into a more powerful physical form. Several types of ki are known to exist.
Magic is also derived from mana, and can be manipulated into a variety of effects, the majority of which are seen through the use of spells. Magic is typically pink in color.