Alkanphel is not recovering his strength.
all his zoacrystals are separated from his body so he can never get that strength back unless he takes all the crystals back.
he will be weak permanently.
as for regeneration and damage that he can sustain....
he was sucked into a singularity.
then he 'strolled' out as if nothing had happened.
i think he is a totally different kettle of fish!!
I dont reckon zoalords have any 'regenerative' capability.
they would just heal like us just a lot faster.
if their arm was cut off it would not grow back.
that is because a zoalords body is not malleable.
aptom and the guyver are both similar types of creature.
they are more symbiotic and adaptive.
a zoalord is a set form.
one flaw in that no regenative abilities, and just faster healing, murakami lost his arm fighting Gyro with G-3, he was put into a bio-tube, and Odagiri told Sho that they made the arm regenerate itself by giving him ome special nutrients which sped up his own regenerative powers.
If I'm wrong, someone correct me, cause this is the way i see it in my Vog-Graphic novel....