Pocket Spirits

Pocket Spirits (ポケットスピリット, Poketto Supiritto) are a large race of Magical creatures who dwell in the Pocket Spirit World. They can be summoned to the human world via Pocket Spirit Magic.

Biology
Due to the great variety of Pocket Spirits that exists, there is no real general biology that is consistent across the entire race. However, most Pocket Spirits have two basic 'forms', each one having various purposes and functions.

Dormant Form
Dormant Form (休眠フォーム, Kyūmin Fōmu) is the most common and preferred form of Pocket Spirits. While in this state, they are noticeably smaller than while in Attack Form, and are consequently much weaker and unable to use their Magic to its fullest extent. However, while in Dormant Form, Pocket Spirits are also much tougher, and usually faster (with some exceptions). While in the Pocket Spirit World, most Spirits stay in this state.

Attack Form
Attack Form (攻撃の形, Kōgeki no Katachi) is the strongest state a Pocket Spirit can be in. When in this state they become noticeably larger, and appear much more monster-like (with some exceptions). While in this state, a Pocket Spirit can utilize its magic to its fullest extent, at the cost of losing a good bit of its defensive capabilities, and some of its speed. Most Pocket Spirits enter this state upon being summoned to the human world.

Civilization
While most Pocket Spirits are considered 'equal', there are two castes of Spirits that are notably stronger and wiser, and therefore are considered the 'rulers' of the Pocket Spirit World.

Royal Four
The Royal Four (ロイヤル4, Roiyaru 4) are the strongest Pocket Spirits currently in existance, and they stay in Attack Form permanently, and thus can utilize their Magic to its fullest potential 100% of the time. These are the hardest Pocket Spirits to summon, and can only be summoned once from a badge, as they destroy a badge by arriving in our world.

Ascended Spirits
Ascended Spirits (昇天の霊, Shōten no Rei) are, similar to the Royal Four, Pocket Spirits who stay in Attack Form permanently. However, Ascended Spirits are not as strong as the Royal Four, and can be summoned multiple times from a badge, though they still cost a large amount of magical energy to summon.