Varför är Marcus Corvinus hybrid natur annorlunda än Michael Corvin?

Jag hittade detta på Underworld Wiki sidan om Hybrider:

Det finns olika typer av hybrider i Underworld-serien:

Lycan dominant - Vampire hybrid :

A Hybrid with a Lycan dominant side resembles a Lycan in appearance. However, their faces are only slightly elongated, and their eyes are completely black. Their rib cages are also slightly extended. They have little or no fur and blue skin. These Hybrids have the talons and animalistic posture of a Lycan. They also possess the Lycan's signature roar. Michael Corvin is the only known Lycan-Vampire Hybrid. It is immune to silver and sunlight. These Hybrids must also feed on blood, like an ordinary Vampire, becoming ill if they consume ordinary food.

Vampyr dominant - Lycan Hybrid :

A Hybrid who was a Vampire first, on the other hand, has more physical attributes portraying its chiropteran 'ancestry'. While it shares the black eyes, grey skin, Lycan talons and musculature of a Lycan-dominant Hybrid, a Vampire-dominant Hybrid has noticeably bat-like ears flattened into its head, a bat-like nose, no hair at all, and taloned, retractable wings. Marcus Corvinus is the only known Vampire-Lycan Hybrid. However, as Marcus is the original Vampire and the strongest of his kind, it can be speculated that not all Vampire-Lycan Hybrids have abilities as potent as those of Marcus. Any effect of silver and sunlight might have on them is still unknown.

Här finns informationen om två hybridtyper du bad om.
Obs! Det finns flera hybridtyper i serien, du kan hitta mer om dem i länken som jag angav.