Half-Cepin are the living embodiment of a Cepin’s adaptability. A Cepin is able to effectively replicate and reciprocate any lifeform’s reproductive functions, allowing for viable offspring to be created who share both the Cepin and another species’ genetic material. Half-Cepin are only genetically compatible with fellow Half-Cepin.

As Cepin are the only species capable of creating subspecies in this manner, Half-Cepin are often viewed as a type of Cepin themselves rather than a member of their other lineage.

Half-Cepin typically display a mixture of both the physical appearance and abilities of their genetic donors.