Serf is the term used by Un, the All-Creator to describe "beings", "species" or "entities" in the Otuverse (Alfaman Multiverse) and Un's Prose (Alfaman Universe). Objects, concepts, embodiments, etc. are also serf classified or ranked. 

Un ranks all serfs as:

1. Deific-Serfs (All-being species)
***Deific means godly
2. Quantum-Serfs (Multiversal species)
3. Celestial-Serfs  (Space species)
4. World-Serfs  (Planet species)
5. Super-Serfs (Advanced species)
6. Serfs
7. Sub-Serfs

Un's Prose examples of serfs by ranking:

1. Eventuality, Adamancy, Inexorable

2. Noustramosis

3. Dyru

4. Una

5. Alfaman
6. Mandia
7. Xylex

Chronology & History of Serf Classes in the Alfaman universe

Un, the All-Creator manifested all-beings through Adamancy and Eventuality who then each created most of their own Celestial-Serfs and World-Serfs. However, they created the most thoughtful and useful Serfs after being in love with each other. These serfs were magnificent and special but few were created as the All-beings soon refused to create more. Un created the Otuverse and displaced certain serfs through the quantuums (thus creating the Quantum-Serfs)

The World-Serfs usually had the powers and abilities to traverse worlds other than their own which resulted in either communion or conflict. Usually, the greatest outcome of this type was their offspring or descendants referred to as Super-Serfs. The Super-Serfs formed usually from the offspring of the World-Serfs and established their leaderships and cultures under the ruling of the World-Serfs. The Super-Serfs became the most versatile and useful class with the most potential in becoming World-Serfs and less likely but possible, Quantum-Serfs and more.

The Super-Serfs gave way to the most numerous and diverse of all serf classes: the Serfs. Blatantly outnumbering all other serf classes but lacking the leadership and courage to unlock their true potential or to overtake other serf classes, these serfs became failures and disappointments to their purpose especially since they was only focused on improving or destroying their own worlds.

It was never the vision of Un to have a single world of Sub-Serfs. The serfs that have devolved serve no purpose to the vision of Un (to see which serfs would dominate the galaxy). However, Un left all serf classes to their own visions and actions. The devolved and degenerate Sub-Serfs should be eradicated from all worlds in the vision of Un. No World-Serf has any prestige if Sub-Serfs inhabit their worlds in the vision of Un. However, Actuality king of the Deifics successfully petitioned for Un, the All-Creator not to eradicate all serfs. 

***All serf classes have the potential and ability to evolve into higher serf classes (some with greater degrees of difficulties) especially through dominance.

There was only four serfs that was known to be aware of Un, the All Creator. Those beings are Adamancy, Eventuality, Inexorable, and the deranged villain Idle.