Life Spirits

are beings with no shape or individuality that are the font of energy that raises all races in all worlds, including Humans, Demons, Goddesses, Giants and Fairies.

Appearance
Life Spirits do not possess any shape or form, being seen as blobs of energy similar in appearance to the Magic called Hope that Percival wields.

Powers and Abilities
Not much is known about the Life Spirits' abilities but they're shown to be capable of sharing a mind with each other in most ocasions, and also being capable of inhabiting other creatures' bodies as shown with Percival and the Behemoth.

Trivia

 * The Life Spirits' energy-like appearance makes them similar to Percival's Magical Power, Hope, implying a connection between them, due to the Manga's lack of color though, it's unknown if they're truly connected at all.
 * Implying it even further, is Percival's bigger energy Golem, now named Jiggly-Val, refers to himself as Life Spirit too like Percival and Behemoth, even though he's made of Hope energy.
 * Further implying it, is that the only known character to possess this power, is a Life Spirit himself, but inside a Human's body.
 * It may be implied by Zarura N'Du that the Life Spirits and the entity Chaos sharing a connection due to both being connected to the many beings in Britannia and similarity in concepts, due to both possessing similar; being capable of inhabiting a vessel, being neutral all the time and have no physical forms to themselves.