A Human-Like Entity that whenever the person died, they soon were revived.
The first Imp was created when a Universal Overflow merged a Phoenix and a human together. This happened some 500 years ago. As a result, all the Phoenix were erased from existence, thus rendering the species.
The Imps look like any normal humans. However, from a glance or sideways vision, they appear to be on fire. This trait was a side effect of the Phoenix.